RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
I forget the obvious.If such a thing as 'explorer' (the visual directory/file-reader that is the core of all the pc's I've ever used) exists, it can be used to add and edit attributes, and sort files by it. .. there you go ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
Another solution could be better, but that's in a realm where I don't excel. The files themselves has and probably can be added attributes/metadata. The scoop of the problem then moves to what attributes to add, where and when. I'll assume that an application program can access a ftp storage (if that's the type of file share that's used) and do a read of the file-attributes .. again, I only tried to up/download via ftp, but it ought to be no swet to read from such a place.I have done reading of attributes programmatically, but the mess of the approach I chose is not recommendable, but that could be due to the complex format (tiff) and that my focus was elsewhere. I'm sure that others here has a proper bid on how to deal with attributes/metadata. .. it ought to be fairly 'easy'. Once you've got that information, sorting it should be no deal weather or not it's done in a web-script or an ordinary application program. Carsten ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
Dave, There's no pc-lab like the pillow.Writing the complex code may be more conviniently done in an 'ordinary' application .. letting the web stuff be one big gophor. 'That' application can have a file-system watcher and a silent thread running and possibly responde on changes. And lots more on 'your' pc. Carsten ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
At a quick glimps it looks as what I just accomplished today. The page that is downloaded keeps pinging back to the server to give it a chance to post back information.Next step is to find out how the server-internals works. It's a bit of a nusence that I probably will have to consider it 'dead' (not running a thread) .. instead of collecting information in arrays, I'll have to write everything into the proper files (open/read/ calculate something/write/close) for every ping ... all before getting to juggle the 'true' problem-complex. I wouldn't have got anywhere without some years of application-programming. I'll hit the sack / cheers > Nibbling away: Carsten's quite correct, re server-side work needing to be > done. > > Now I believe an approach based on xmpp might provide a solution; > Googling for XMPP and collaboration finds several interesting & > possibly suitable approaches. > > Especially interesting, IMO, is > http://www.ibm.com/developerworks/xml/tutorials/x-realtimeXMPPtut/section3.html > > AS > > On 2/17/12, Dave Patton wrote: > > On 2012/02/17 11:51 AM, Arnie Shore wrote: > > > >> BTW, I believe the OP is looking for handling not a random file > >> (hardly that!) but an 'arbitrary' user-selected one. > > > > Arnie is correct - I should have perhaps said 'arbitrary'. > > The point is that the Reviewer can't necessarily anticipate how > > the 'files of interest' will have been 'organized' by the Workers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
Dave, If the only common denominator of all involved is the company you work for, you'll need a gophor.Joke aside. If noone in your organisation can build you a .html that everyone involved can access, you do have a problem.To put resonable scripting on the page and on the server it's downloaded from is your key to the problem - as I can tell -. The page does not need to be hosted on the same server as the files, or for that matter have access to them. But I don't see how you can do anything without information about the files and a central place to process that information. If I'm off the mark, then please let me know. Bwt the file-system watcher I mentioned is probably an object that lives within application programming (a .dll) ... easy to program, a nightmare to distribute. I can imagine a dilemma: Putting events (if it's possible) on the arrival/movements of the files could be risky business to write code for. Teaching your staff to use a page that factually is only an appendix to the real work of processing those files could be a not very rewarding task either ... Carsten > >> It may be possible to add software to the Reviewer's workstation to > >> assist with this process, but it will be less likely to be able to > >> deal with the Workers' workstations, and very unlikely to be able > >> to deal with the servers hosting the file shares. > > > > is that to be understood as .. they can view or download from, but > > not say make any scripts on the server ? > > The servers that host the file shares used by the Workers and/or > the Reviewer are not available at all to the Workers/Reviewer. > All they have access to is the file shares, which they use as > mapped drives. The file servers are managed by a central part > of the organization, so even the IT staff that supports the > Workers/Reviewer does not have access to the file servers. > > -- > Dave Patton > Victoria, B.C. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
> My take is that the major item not readily available is a notification > mechanism, to be triggered when something changes, with users > registering themselves with some kind of call-back function. > > I dunno what's avaiable in desktop software libraries for this, but I > see html5 providing such a mechanism in its 'local storage' feature. > Like see http://www.quirksmode.org/blog/archives/2009/06/html5_storage_t.html > and http://html5demos.com/storage-events. Yes. LocalStorage is handy and easy to work with -but- though it's available storage on user's pc's, it's only makes sense in the scoop of a visited page. (does that make sense?).. I'll elaborate: Unless you are managing a html-page that a user ownloads, you cannot access the localStorage of that pc [in my understanding]. The access happens through scripts on the page.About events .. administering the erection of a html-page with it's scripts, on a server, does not really provide server-side events - except for the return response of a xmlhttprequest or similar, send from the client. But, this could be enough. (look up AJAX for the xmlhttprequest ) The ping-ing back and forth takes simple code .. it won't be cluttered up until you want to use it for something sensible ;o) > BTW, I believe the OP is looking for handling not a random file > (hardly that!) but an 'arbitrary' user-selected one. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' files?
> Date: Fri, 17 Feb 2012 05:24:48 -0800 > From: da...@confluence.org > To: discuss@lists.osgeo.org > Subject: [OSGeo-Discuss] any ideas on how to Monitor and Review 'random' > files? > > We are doing some brainstorming in order to come up with possible > ideas of how to address a problem, so any thoughts, comments, or > suggestions are welcome. The problem is outlined below. > = > > Within a corporate environment the users have workstations > running Microsoft Vista. All users have access to some > network file shares, but different groups of users have > access to different file shares. All file shares are > using the NTFS filesystem. > > A group of users - call them the Workers - have a common > file share that they use during the course of their business. > When an "event" takes place, and for some time after, various > Workers will add event-related files to the shared location. > How such files are organized is up to the Workers. There is > no technical mechanism (i.e. filesystem monitoring software) > or procedural mechanism (i.e. business process) that currently > exists that results in 'monitoring' the addition of, or changes to, > the event-related files. I recall an item in the visual basic idé (the visual programming environment) called a 'file-system-watcher'.I never used it, so I cann't comment an further. > A different user - call them the Reviewer - who works in a different > part of the corporate organization, has a need to 'review and organize' > some of the event-related files that are provided by the Workers. > This process typically takes place 'after the event', however, > event-related files might be added by the Workers well after the > event took place (e.g. months or years later), so the Workers could > be making updates during the same time period that the Reviewer is > doing their 'reviewing and organizing'. > > For a particular event the Reviewer may want to review the > event-related files, 'organize' them, and be informed when Workers > add more files for that event. Eventually there may be a need to > make a copy of some of the event-related files, based on criteria > specified by the Reviewer. > > It may be possible to add software to the Reviewer's workstation > to assist with this process, but it will be less likely to be > able to deal with the Workers' workstations, and very unlikely > to be able to deal with the servers hosting the file shares. is that to be understood as .. they can view or download from, but not say make any scripts on the server ? > Although this isn't really about "geospatial processing", there > are some geospatial files involved in this process. As an example: > - an event takes place - call it "ABC123" > - a Worker who has files related to ABC123 will put the original >files, or copies, on a file share (e.g. some raster maps, some >shape files, some word processing documents, some emails, some >JPEG photos, KMZ files, etc.) > - other Workers will also have files related to ABC123, and they >will also put them on the file share > - the above process continues while the event ABC123 is 'active' > - over time the initial set of "ABC123 files" will stabilize, >and there may not be any new files added very often > - the Reviewer gets involved sometime after the event, and starts >with the set of files that exist at that point for event ABC123 > - the Reviewer may want to 'organize' the files for event ABC123, >however that might be able to be accomplished by 'organizing' >file metadata, rather than having to make copies of the ABC123 >files and organizing the copies > - when files for event ABC123 are updated (e.g. a Worker adds a >"One Year After" report for event ABC123), the Reviewer wants >to be able to know that there has been an update > - at some point the 'organized files' for event ABC123 (and possibly >some 'notes' or 'metadata' about those files) will need to be >copied from the Workers' file share to another file share, in >order to preserve a copy of the files and to provide a location >to use for processing the files as they are loaded into a >'document management system' that the Reviewer uses > (the last step of loading files into the document management system > is already in place, and isn't part of the brainstorming exercise) It's not a straightforward problem, so, I could imagine that I would tackle it by my process of working. Coding is the heaven of 'divide and concur' .. building a long list of involved files for starters would bring something to .. divide (read: organize). A way would be to mandate a process of registering files (ie by way of a form on a php/html-driven page). I'll not attempt to feed my brain with the whole setup of your problem, but currently I'm sort of taking a run at dealing with an eqvivalent problem-set: administering a twitter-page (never been twittering
RE: [OSGeo-Discuss] Open GIS Overview
Arnulf, Thanks for your thorough input CarstenT > Date: Sun, 2 Oct 2011 15:53:06 +0200 > From: se...@arnulf.us > To: discuss@lists.osgeo.org > Subject: Re: [OSGeo-Discuss] Open GIS Overview > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > On 02.10.2011 12:50, Carsten Troelsgaard wrote: > > > > Jeroen, it looks very promising - I look forward to delve on it and will > > surely keep it for further reference. > > > > Arnulf, the osgeo page has links to projects. The tab/ web mapping has > > an array of (similar at a glance) web mapping projects (mapbender, > > mapfish ...). I assume that the projects have functional overlap. Is > > there any other way to 'evaluate' without scrutinizing all of them > > individually? > > Hi Carsten, > there are several comparisons around but none of them will be "endorsed" > by OSGeo an has the "one right answer". The Open Sourece ecosystm is so > diverse that there will always be competing projects, each of them good > in what they do. It is really up to you to find out which one suits your > needs better. In the end diversity wins. If you opt for an OSGeo project > you can be sure that the licencing is right and that there is a > community behind the project. > > A good example might be a mapping framework comparison we gave at a > FOSS4G conference [1]. 30 slides explain the primary areas of use for > the projects OpenLayers, Mapbender, GeoMajas and MapFish. They all > appear under the category "web mapping" but are still different, > complement or even build on each other. > > Web map servers can be compared in the benchmark / shootout that takes > place at FOSS4G each year [2]. But again - this is just one aspect of > the software. Other aspects might include that you have a company around > your place that can help you [3]. Or you might be looking for > maintenance contracts to support you when you go online with a massive > installation. > > ...and if you ask on this list eventually every project will answer and > let you know that they are the best (the projects that do not answer are > busy getting better). It is what we are here for. :-) > > Again - if you have ideas how we could better guide new parties through > the different options let this list know. > > Best regards, > Arnulf. > > [1] > http://arnulf.us/FOSS4G_2010#A_typification_of_Open_Source_web_mapping_client_software_and_frameworks > [2] > http://www.slideshare.net/gatewaygeomatics.com/wms-performance-shootout-2011/ > [3] http://www.osgeo.org/search_profile > > > > Thanks a lot to both of you > > > > CarstenT > > > > > > > > ___ > > Discuss mailing list > > Discuss@lists.osgeo.org > > http://lists.osgeo.org/mailman/listinfo/discuss > > > - -- > Exploring Space, Time and Mind > http://arnulf.us > -BEGIN PGP SIGNATURE- > Version: GnuPG v1.4.10 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk6IbMIACgkQXmFKW+BJ1b3hCQCZAYcQxoBWNFzBVpfbqlLKaIFK > ETcAmwexheWHE9LexR6ZHKqWXUZx3IEY > =UJpr > -END PGP SIGNATURE- > ___ > Discuss mailing list > Discuss@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] Open GIS Overview
Jeroen, it looks very promising - I look forward to delve on it and will surely keep it for further reference. Arnulf, the osgeo page has links to projects. The tab/ web mapping has an array of (similar at a glance) web mapping projects (mapbender, mapfish ...). I assume that the projects have functional overlap. Is there any other way to 'evaluate' without scrutinizing all of them individually? Thanks a lot to both of you CarstenT <>___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Open GIS Overview
Can anyone point me to a sort of OpenGis Overview .. anything that can support me in choosing which GIS-tool/s is best suited for a particular problem and what sort of problems the available GIS-tools best tackles?I have a strong interest in general GIS, and a very limited user-experience .. but that will be the situation of meny new potential GIS-users. I'm confused as to what tools to take a focus on, in preparation for taking on a 'real' but undefined geo-related problem. I'm not sure weather the following keywords covers all importent components that a minimum workable GIS setup contains:Client, Server, Data, Network If these suffice then .. would it be possible to map some of the most important (or all) OpenGIS acronyms to these 4 basic components? .. I'm not sure that it will solve the problem of overview since a confined programmable consept that a 'module' constitute may not conform. I'm trying to get a glimps of the elefant but only find potential snouts, tails, knees ... That's atleast what I feel. Would it be possible to pull a KIS? (design-principle for 'keep it simple"). Feel free to smile and think "ah, .. another one that doesn't want to do his homework!" CarstenT ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] will trade grassfed beef for code
I thought for a minute that you would start that funny style Irish dancing Abe sent a video: http://youtu.be/aKoAYLNqYFQ ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] Request for help with OS farm and ranch mapping tool.
Hi Christopher I'll try to approach Abe's problems. I'm new to Python and it doesn't appear to be an indifferent matter weather I use Python ver 2 or 3 ... Can you comment? Carsten Date: Mon, 12 Sep 2011 08:36:20 -0400 Subject: Re: [OSGeo-Discuss] Request for help with OS farm and ranch mapping tool. From: crschm...@crschmidt.net To: discuss@lists.osgeo.org CC: wboyk...@geosprocket.com For the record, I did some of the initial development on the landplanner side of things with William, so anyone who helps out on that side of things can spend their nights cursing me :-) (That code is available as a general tool under crschmidt/olhttp in github.) --Chris On Sep 12, 2011 8:32 AM, "Abe Collins" wrote: ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] Request for help with OS farm and ranch mapping tool.
Hi Abe I hate to let this chance pass to get involved in a project that interests me, but I'm pretty sure that I'll be more in the way than able to do anything to help the project progress anywhere. I'm proude of my amateur programming skills and I am an educated sedimentologist though never worked as such. I downloaded the project-code for a quick look and, yup .. it's egyptic to me.My skills lies at vb and c# in the microsoft studio editors .. writing for something (visual) to work on one machine, not particularly on a network or extracting from databases. That aside .. what's left then?I'll try to figure out what I've downloaded and return to you if/when I get a proper hunch. Carsten ___ Date: Mon, 12 Sep 2011 08:32:47 -0400 From: abenews...@gmail.com To: discuss@lists.osgeo.org CC: wboyk...@geosprocket.com Subject: [OSGeo-Discuss] Request for help with OS farm and ranch mapping tool. Hello OS GIS community, My name is Abe Collins. I am a grazier and farmer in St. Albans, VT. I belong to a community of farmers and graziers around the world who are focused on improving soil health, reversing desertification, sequestering carbon in soils and enhancing provision of environmental services to communities through innovative grazing and agricultural management. I've been working on the beginnings of a free and open source farm and ranch mapping tool called New Soil Land Planner. http://newsoilnet.ning.com/page/farm-mapping-tool It is embedded within a social network, the purpose of which is to facilitate grazing and agricultural management that improves soil health. newsoilnet.ning.com Everything above is in very early phases, but as soon as we have basic functionality on the land planner tool, we will be releasing the bundle to a sizable group of agricultural innovators to see what the regenerative agriculture community can do with these tools and networking capacities. Our hopes are high. I've had some good help from Bill Morris of Geosprocket Spatial Solutions. http://www.geosprocket.com/portfolio/He has written much of the existing code for the New Soil Land Planner and for the New Soil Analysis tool, a companion project. The New Soil Analysis tool draws from the soils and topographical datasets created by the Soil Information System (SIS). http://www.soilinfo.com/ The SIS offers unprecedented accuracy and precision in soil properties mapping. The SIS has mostly been used for precision agriculture so far. It has a lot of potential to reliably drive environmental modeling of watersheds. We eventually intend to use SIS data from regeneratively managed farms and ranches to conduct research and environmental modeling at the watershed level, generating alternate watershed function and environmental services provision scenarios. Bill has to turn to other projects now, so I am turning to the OS GIS community to ask for further help. I'm seeking advice, code ninja cognitive surplus and bids if necessary to finish the Phase I New Soil Land Planner punch list and achieve the basic level of functionality needed to engage beta agricultural users. Much of the work to be done requires experience in customizing OpenLayers. Feedback, advice, coding per the punchlist and bids are much appreciated. An outline of what we are seeking, a list of fixes and access to the code, data and websites can be found in this google doc: https://docs.google.com/document/d/1est8q9fUldsY-d9jal97YeL6W_u2L84X8nL5j5N7bFk/edit?hl=en_US Thanks for your consideration, and I welcome communications. Abe -- Abe Collins Founder New Soil Matrix, Inc. (802) 782-1883 Skype: abe.collins "Do civilizations fall because the soil fails to produce - or does a soil fail only when the people living on it no longer know how to manage their civilization?"---Charles Kellog, Soils and Men, the 1938 United States Department of Agriculture Yearbook of Agriculture "Every era has been shaped by its response to the great water challenge of its timethose societies that find the most innovative responses to the crisis are most likely to come out as winners." -- Steven Solomon, Water - The Epic Struggle for Wealth, Power and Civilization "Man, despite his artistic pretensions, his sophistication and his many accomplishments, owes his existence to a six-inch layer of topsoil and the fact that it rains." ---Author Unknown “Land, then, is not merely soil; it is a fountain of energy flowing through a circuit of soils, plants, and animals.” ---Aldo Leopold -- Abe Collins Founder New Soil Matrix, Inc. (802) 782-1883 Skype: abe.collins "Do civilizations fall because the soil fails to produce - or does a soil fail only when the people living on it no longer know how to manage their civilization?"---Charles Kellog, Soils and Men, the 1938 United States Department of Agriculture Yearbook of Agriculture "Every era
RE: [OSGeo-Discuss] 30m SRTM worldwide?
Hi Sylvain Great that you can deal with the anomalies in Grass.I hope that the note 'Undoubtedly the linear artifact are « step anomaly » (p. 19 text).' That should make the correction straightforward. I figured that by ink-stain they would imply some anomalous 'edge' like when a coffee-stains darkens at the edges. In any circumstance, you've got the upper hand on it now. .. and I've become fameous ;o) Carsten > Hi Carsten, > > Continuing your idea I import ASTER QA Plain file ASTGTM_..._num.tiff > in my GRASS location. It show a 1 to 3 stack count which borders areas > superpose with artifacts (see both images end of > http://yepca.org/wp3/?p=303 ). > Next steep is to verify what append if I use the stack number to > correct GDEM using GRASS mapcalc (something like 'if stack layer = 3 > than GDEM =+20m'). Then comparing with SRTM-DEM in a untouched forest > area... Let me dream... > > Thanks again > Sylvain ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] 30m SRTM worldwide?
Hi Sylvain The mystery moves to why they didn't 'fix' it in the first place.I noted that part of the Amazon Basin has a low overall stack-count.The QA file that follows the geoTiff-data is populated with data (stack-numbers) in the same format (geoTiff) .. that makes it possible to predict troubled areas. I'm not sure if your GIS-tools can incoorporate and use the auxillery-data. Carsten Sylvain wrote: > Hi Carsten, > > It is almost certain that you are right. > > The chapter "C. Residual Anomalies and Artifacts GDEM" detailed > "Artifacts Related to Stack Number Irregular Boundaries." > - Decripiton of the "pits" is similar to more or less circular holes I > see. The text says they "Regularity and Often Occur with high > frequency in Virtually all ASTER GDEM tiles" and "from just a FEW > meters to 100 meters or more." Ok > - The large positive anomalies similar to "mole run" artifacts (p.23 > of the text). > - Undoubtedly the linear artifact are "step anomaly" (p. 19 text). > > Thank you for your comments, I'll put them on the blog to let things clear. > > Bests > > PS: as you assume, unfortunately, no amazon mystery reveled... > > Sylvain ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] 30m SRTM worldwide?
I looked around for information about the artefacts in the aster data. The Quality Assessment file that accompanies the data mentions:QuoteThe automated cloud masking and statistical approach used to select data for stacking are not totally effective in avoiding anomalous elevations values, and anomalies may remain in the GDEM where the stack number is three or less, particularly. Where available, existing DEMs were used to replace anomalous GDEM values, including adjusting for offsets between the ASTER GDEM and the reference DEM data. UnQuotefollowing the link:http://www.ersdac.or.jp/GDEM/E/image/ASTERGDEM_ValidationSummaryReport_Ver1.pdfAt page ~20 the chapter "Artifacts Related to Irregular Stack Number Boundaries." has additional information and visual displays equal to the ones you link to at //yepka..It would be interesting if the artefacts reveal some secret about the landscape, but so far I've treated as a measurement/processing-error. I assume that 'stack-number' originates from overlapping measurement-swats CarstenSylv wrote: I used a re-sampling to 30m of SRTM-DEM (made by Brazilian INPE) and observe a visual superposition between GRASS-r.watershed river network output and 2001 Landsat7 deforested areas (the nearest date after SRTM) (see http://yepca.org/wp3/?p=349) As you suggest, I'll verify if CGIAR SRTM-DEM is better in such flat area with forest/cultivation patchwork. In first analyze, ASTER GDEM gave better river network, even with the theses 20-30m holes or larges areas artifacts!... but more job is necessary to verify and understand why! Sylv ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] 30m SRTM worldwide?
Hi Seb I've never been there and look forward to tryif anyone should have become interested in a flyby in these data, my previously mentioned tiff/hgt-viewer is still available athttps://skydrive.live.com/?cid=382e99b169b58267#cid=382E99B169B58267&id=382E99B169B58267%21194(press F to get a FileOpen-prompt) .. any feedback is welcome.I hope the aside doesn't bother you Sep. Carsten - Seb wrote: The Aster DEM has 30m posting and covers most of the globe. http://free-gis-data.blogspot.com/2009/04/aster-global-digital-elevation-model.html Also ... ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] 30m SRTM worldwide?
hi seb and sembale The link provides two links:NASA’s EOS archive or Japan’s Ground Data System both probably contains the data, but it's a lousy quality and not worth the download .. and the registration at EOS is rather strict The best DEM I've got is 90m via http://srtm.csi.cgiar.org/ and their server is overworked and won't let you take more than a couple of tiles.There's a few 30m tiles at http://www.viewfinderpanoramas.org/if memory serves me right CarstenDate: Mon, 22 Aug 2011 10:25:53 +0100 Subject: Re: [OSGeo-Discuss] 30m SRTM worldwide? From: sebhud...@gmail.com To: discuss@lists.osgeo.org You could try here http://www.opentopography.org/index.php/blog/detail/comparison_of_aster_gdem_to_srtm On 22 August 2011 10:22, Sylvain Maillard wrote: 2011/8/22 maning sambale Dear Sylvain, The USGS site, provides ~30m SRTM only for the US. I'm looking the 30m worldwide coverage. That was mentioned in the link I provided. In fact the SRTM data is available at 1 arc-second for the US, but there is only 3 arc-second data fot the global coverage ! see http://eros.usgs.gov/Find_Data/Products_and_Data_Available/SRTM on section "SRTM Data" regards, Sylvain ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Seb Hudson +44 (0) 1970 625368 +44 (0) 7811 268789 ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] online open source polygon mapping, like OSM?
Hej Nitin I'll risk my credibillty on a comment. I grasp little of GIS, but I've spent a lot of attention on visualizing data and 'painting on the screen'. I've got an impression that time-animations belong to a next generation GIS, but don't take my word for it. I expect that the code-changes needed to animate a 2d polygon lies very deep in the code structure. Ok, say I have what you have on your pc .. I would look for the polygon-data. Is it accessible? I know of one set of polygon-data, and that's the esri shapefile format. I've been working on accessing that format through code, but I'm not all there yet. Next question: how/where are the changes of data? I mean, do you have ie two sets as a 'before' and an 'after', or do you have a time-dependant algorithm that can be used on the initial data to propagate it forward (probably not). How is your setup on that front?The 'painting-mashinery' of your pc may read directly on the data, so there could be problems on syncronisation if you start to write to the same data - I could imagine that this is where the real problems are, becourse the transmission from the data to the screen may need to be redirected to somewhere else (to the changed data) or wrapped up in a thread-safe way. That's a problem that's been solved before, but probably not without altering the original code .. it's on the edge of my experience.That said, I'm very little acquainted with any gis-tools, so don't take my comment for more than it is KindlyCarsten> Subject: Re: [OSGeo-Discuss] online open source polygon mapping, like OSM? > From: tmitch...@osgeo.org > Date: Wed, 3 Aug 2011 14:01:26 -0700 > To: discuss@lists.osgeo.org > > Hi Nitin, I'd suggest you focus only on running something on your own PC for > now so you can test it out without worrying about hosting providers. Then > again, maybe someone on here knows of some public services you might use, but > I'm not familiar with any. > > For getting started I recommend you check out some of the workshops from last > year's FOSS4G - most of them have downloads available of the course material > and software, specifically for newcomers like yourself. Check out: > http://2010.foss4g.org/workshop.php > > Hope that helps! > > Tyler > > On 2011-08-03, at 1:44 PM, Nitin Gadia wrote: > > > Thanks for that tutorial. I'll need to first have administrative access to > > both GeoServer and PostgreSQL running on a server. > > > > So, I'm thinking of setting up, as I mentioned, both mapserver via geomoose > > and geoserver. > > > > I am new to all of this, so I'm going to send questions to the individual > > mailing lists to get help setting up. > > > > Does anyone think there is a way I can just use the tools through a server > > providing the tools as a free service? > > If I should just go ahead and install everything on my own server, I was > > thinking of setting up a server through godaddy, a third-party service. Is > > this a bad idea? I don't want to have any problems, and they're good with > > customer support. I have no experience setting up a server on my own... > > > > I'll send links to the threads I start on the geoserver and geomoose > > mailing lists. > > > > thanks, > > nitin > > > > On Tue, Aug 2, 2011 at 8:32 PM, Noli Sicad wrote: > > Here's a tutorial for OpenLayers WFS-T Using a GeoServer Hosted PostGIS > > Layer. > > > > "A WFS-Transaction can be used to add, remove or modify the features > > that are loaded, and most importantly allows for the changes to be > > committed back and saved to the parent source." > > > > http://www.gistutor.com/openlayers/22-advanced-openlayers-tutorials/47-openlayers-wfs-t-using-a-geoserver-hosted-postgis-layer.html > > > > Noli > > > > On 8/3/11, Nitin Gadia wrote: > > > I just had a good conversation with Tyler Mitchell at OSGeo. > > > > > > I am going to dive in and set up a server with openlayers and try > > > different > > > tools for the server layer. > > > > > > What I need is something that deals well with WFS-T and WMS-T. > > > WFS-T is for adding and editing features, and WMS-T is for requesting maps > > > with a time component. > > > > > > Noli Sicad above gave a great overview article about WMS-T, which > > > mapserver > > > has developed and geoserver is working on: > > > http://underdark.wordpress.com/2011/06/10/wms-t-support-in-geoserver-and-mapserver/ > > > > > > I am going to do some research into WFS-T. > > > Any thoughts? > > > > > > Looks like geoserver and mapserver handle that, as well as geomajas, > > > deegree, mapfish, and others. > > > > > > I'm going to dive right in and set up both mapserver (perhaps using > > > geomoose) and geoserver\ > > > I'll be needing help setting it all up, so I'll probably be asking the > > > individual mailing lists for help with that along the way. > > > > > > ... and by the way, there's a good chance I will attend FOSS4G, perhaps I > > > can talk to people there and attend a related wo
RE: [OSGeo-Discuss] Hello everybody
Hi Dan Thanks for the suggestions. I put meself on dotnet List and had a look at codeplex ;o) .. (couldn't help smiling there) I need a break from fumbling round .. I think that I have a ~600mb downloaded microsoft library that I can, and have spend a lot of time in. It look as if my problems have a chance in the part of visual studio that I've avoided so far (com-objects) >sigh< I can read c and have got the best info by reading the code in libTiff. And I know the syntax for reaching 'unmanaged code' as it's called, but havn't yet tried it. Maybe the largest obstacle is to convince myself that I really need it .. I sortof expect someone to hit me with a magic one-liner that solves everything. It's hard to believe that it's necessary to write your own codec to reach data in the public domain (It's called something like 1 or 30 arcsec aster elevation model data) Carsten Quote Carsten, with your background in VB and interest in C#, you should also consider joining the dot...@lists.osgeo.org mailing list and check out our projects including DotSpatial, SharpMap and others (search "gis" on codeplex.com and go to town). - Dan UnQuote ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] Hello everybody
> It should be possible to use the .net bindings of GDAL maintained by > Tamas Szekeres from VB.Net though I must confess I haven't tried it myself. > That should be a relatively easy way of reading GeoTIFF and other geospatial > raster data formats. Thank you for the suggestion. I just tried to install GeoNetWork. I cann't have informed myself well enough .. or wasn't able to to see, that Java was a prerequisit. The Java-install had a conspicuous silent exit (without a confirmation of successful install). The following install of GeoNetWork could not proceed to the end, but I think that it popped a 'success'-screen. It doesn't work, and none of the programs seem to exist persistently enough for an uninstall, though the startMenues are present. I would call that a spectacular fiasko. Or have I grown too complacent at the latest ..?.. Frank Warmerdam, GDAL cann't be worse than that. I do the black screen reboots in my own programming ;o) I did read the libTiff. It's informative enough for me to get going on Tiff. Carsten ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Hello everybody
Hi all Alas I found a group that share my interests. It feels like I've been a long time under way. I found you through TifLib. I've been looking for useful information about how to access data in geoTiff, and there it was. I have a general interest in 'visualisation'. That would mean anything from doing small drawing programs to 'fast and furious' 3d-graphics showing georeferenced data. I am an amateur programmer, with emphasis on amateur and in the low Visual Basic (VB) league as such .. that doesn't prevent me from having a good time or creating something usefull. I started doing VB 20 years ago in the MS Office Excel attachment and is currently using a free version of Visual Studio 2010. The net.framework that spans the gab between coding-languages makes it difficult to take the final jump and become a 'real' programmer (in C# or C++). I'm well educated, in part as a ceramican, in part as a sedimentary geologist - and very unimployed. Don't acuse me for abusing an easy-to-use educational system 'cos I would not be able to defend myself. I succeeded in getting some 'fast and furious' graphics up and running a good year ago. It was a new and encouraging experience to get hold of USGS DEM-data and achually watch it in the program. Getting the higher resolution of the public aster-data has become a natural target, but getting to watch fast and furious DEM in the first place sort'a overextended my abilities. Getting to understand Tiff/geoTiff and how to approach it programmatically has become a priority. ... so, I'll be lurking to see if I can get a gist of where how and what Kindly Carsten Troelsgaard ps. I have a net-provider account that runs for short periods at a time, so I may abrubtly vanish from discussions from time to time. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
