Re: [OSGeo-Discuss] Formation of Yukon Chapter
That's great to hear, I'm adding it on my todo list to get the Yukon gov data available on Koordinates.com. I guess the best way to keep up with progress is to grab the rss feed of the wiki page, and watch the changes, as well as notices to this main list. cheers, Sam On 9/14/11, j...@geoprism.ca j...@geoprism.ca wrote: Anyone interested in working towards the formation of a Yukon OSGeo chapter are encouraged to visit the Yukon page on the OSGeo wiki. We're already two members strong! Depending on the membership and severity of the winter winds, we intend to alternate meetings between Dawson City and Whitehorse. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] 30m SRTM worldwide?
Hi everyone, I can create a transparent overlay for Garmin Map (IMG files), of the entire planet for these SRTM contour lines. I can use the grid of .1x.1degree tiles. If their is any use for having this map, on a global-scale, please let me know, i i can create it. I could also upload this data in the .osm file format to the commonmap development API, so then it can be downloads easily. if there is a demand, an API can be created to host this specifically. Thanks, Sam On 8/22/11, maning sambale emmanuel.samb...@gmail.com wrote: 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. On Mon, Aug 22, 2011 at 4:59 PM, Sylvain Maillard sylvain.maill...@gmail.com wrote: Hi, you can also download them from the earthexplorer ui from the USGS (http://earthexplorer.usgs.gov) more informations on http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/SRTM cheers, Sylvain 2011/8/22 maning sambale emmanuel.samb...@gmail.com I got this news recently, from this website, one can download ~30m SRTM data: http://eoweb.dlr.de:8080/index.html The X-band SRTM DEM data are provided in DTED format. Detailed information on the DTED format can be found in the document 'Product Description of the SRTM DTED-Format' (SRTM/PD-03/11/03) available at http://www.dlr.de/srtm/docs/SRTM-XSAR-DEM-DTED-1.1.pdf. The DEM and HEM data are in geographic (Lat/Long) projection, datum WGS84. The elevation values are also WGS84, as specified in the product description of the SRTM DTED-format. The DEMs inside the compressed archive are distributed as individual files, i.e. they are not mosaicked into one large DEM file. Each DEM covers an area of 15' by 15'. The filename of the individual DEM file specifies the bottom left coordinate of the corresponding 15' by 15' DEM tile. One pixel of the DEM files corresponds to approximately 25 m x 25 m on the ground. The elevation values are provided at a resolution of 1 m. The horizontal accuracy of the SRTM X-band DEMs is ±20 m (abs.) / ±15 m (rel.), both 90% CE. The vertical accuracy is ±16 m (abs.) / ±6 m (rel.), both 90% LE. Precise information on vertical and horizontal accuracies for individual tiles can be found in the accuracy description record (ACC) of the DTED file. I tried to access the public portal, but I just got the Loading java virtual machine message. Anyone here, who can access the data and is it really available to the public? -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ 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 -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Open source map server
Hi, Koordinates.com is currently hosting a whote 'tone' of data, where each dataset /item is independently licenced. The API isn't open source, but the data is free. On the next level, the CommonMap.org project, is 'just like OSM' but with the ccBY licence for it's data, were all shp file source attributes are maintained, with the addition of 'osm-tags'. If anyone knows of better systems, please do share, as duplicate efforts on where to spend time is a frequent occurance. :) cheers, sam On 8/3/11, del cadarn del_cad...@hotmail.com wrote: Hello all, I am calling upon your Open Source expertise. I'm currently working on an online [censored] map for a community project. I am trying to find the right map server or web map services that would enables us to make the most of this project. I feel a little overhelmed with all the different options online and thought you could maybe make a few recommendations. Here are some more details on what I am looking for. At its most basic, I look for a server that enables to see georeferenced features on a basemap, click on a feature to display more information and also edit information. Ideally I am looking for a mapserver supporting WFS, enabling the display of multiple layers (that could be switched on/off) supporting simple queries ( intersect, buffer) and maybe also enabling links and photos. Unfortunately there are two main constraints: my limited knowledge in programming (I only know a little python and no java whatsoever) and user-friendliness of the finished platform is essential as it is aimed to local communities with limited computer skills. Merci, D -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] weave release
Great! Can you pass a link to it? Happy to test it out and provide tickets/bug reports. Thanks, Sam On 6/16/11, percy per...@pdx.edu wrote: I'm happy to announce that a new open source interactive data visualization tool for the web is available. It's called Weave, and is currently in beta. It requires a java servlet engine on the server, and flash in the client. I am using it to serve up data for the Portland region, as I've been lucky enough to participate in the pre-beta testing. What's really cool is the interactivity between the graphs, data tables, legend and map. It's all linked up. Plus time animations for map data! Other regional indicator projects are also using it, and we anticipate a big rollout in the Fall. Since it's beta, don't expect a lot of support yet... Cheers, Percy -- David Percy Geospatial Data Manager Geology Department Institute for Metropolitan Studies Portland State University http://gisgeek.pdx.edu 503-725-3373 ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Re: [AtlanticCanada] Help building a tile cache from a large dataset of orthophotos
Hi, Koordinates.com offers hosting of orthophotos on their servers (as they do for Land Information New Zealand), there is also an API option available. I don't know the detils, you'll just need to ask the developers of it. cheers, Sam On 6/10/11, Connors, Bernie (SNB) bernie.conn...@snb.ca wrote: We have a data set of orthophotos. The specs are: · 51,971 images, (1.92 Terabytes total) · 30 cm GSD · Cut in 2km x 2km grid · No overlap between images We are an ESRI shop and we are using version 9.31 on the desktop and the server. We do not have the ESRI Image server extension. To build a tile cache from the orthophotos we need to store the orthophoto data in an ESRI Raster data set. This is proving to be very slow and problematic. We have done this successfully in the past but with an older and smaller dataset (2000 images, 200 GB, 1 m GSD). Can somebody suggest an open source tool that can produce a tile cache that can be consumed by ArcGIS server 9.3.1? Thanks, Bernie. -- Bernie Connors, P.Eng Manager - Spatial Data Infrastructure Land Information Secretariat Service New Brunswick Tel: 506-444-2077 Fax: 506-453-3898 45°56'25.21N, 66°38'53.65W bernie.conn...@snb.camailto:bernie.conn...@snb.ca www.snb.ca/geonb/http://www.snb.ca/geonb/ -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Open StreamMap?
Hi, The CommonMap.org API will be able to handle data-extracts, so then independent maps can be remixed into new works. Especially for data like 'groundwater', it'll probably be added to CommonMap, but might not get to OpenStreetMap. Cheers, Sam On 5/27/11, Stephen Woodbridge wood...@swoodbridge.com wrote: On 5/27/2011 9:51 PM, Charlie Schweik wrote: Hi, I find myself wondering if there is a possibility of starting an open stream map project in a similar way to open street map? With the idea that this might be connected to an invasive plant species effort too... It is an interesting idea -- roads are relatively stable. Streams have additional attributes, like water levels. Any reactions or ideas on how this might be started? You might start with DEMs and analyze them for V like paths that represent drainage in the terrain. This would give you a starting place. Then I suppose you could recruit people that like to hike to collect GPS tracks along rivers, streams, ponds and lakes and enter that into a OSM server designed to work with hydrology models. -Steve W ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- --- Across Canada Trails - Beyond 2017 - The National Trails Network Victoria, BC Canada Twitter: @Acrosscanada Blog: http://acrosscanadatrails.posterous.com/ Facebook: http://www.facebook.com/sam.vekemans Skype: 'Sam Vekemans' Member, CommonMap Inc. http://commonmap.org/ IRC: irc://irc.oftc.net #CommonMap Also find us on Facebook, Twitter and LinkedIn ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] A technical geodesic note about CommonMap - national vs international datums
Hi, OSGeo-discussion list, I just wanted to forward this message from Brendan, hopefully someone who knows enough about projections can help with this, so to decide on which coordinates system to use, and how to handle coordinates shifting. Thanks, Sam -- Forwarded message -- From: Brendan Morley morb...@commonmap.info Date: Mon, Mar 21, 2011 at 5:05 AM Subject: [OSM Fork] A technical geodesic note about CommonMap - national vs international datums To: Sam Vekemans acrosscanadatra...@gmail.com Cc: osm-f...@googlegroups.com osm-f...@googlegroups.com, frie...@commonmap.info Sam etc., I've been thinking a bit further about which datum to use for coordinates in CommonMap. As you know it can mean 1-2 metres difference between your current national datum ( NAD83(CSRS) ) and the GPS datum ( WGS84(G1150) ~ ITRF2000 ). While WGS84 seems attractive because of direct compatibility with the GPS system, it's actually seems to be quite horrid from a geodesist's point of view. This is because NAD83(CSRS) coordinates are basically tied to the North America continental plate, therefore are expected to converge to finer coordinates over time, but hopefully never drifting. However, WGS84 coordinates are basically tied to the average of all continental plates. Therefore a WGS84 coordinate is, strictly speaking, out of date as soon as you measure it. This doesn't work so well in a geo database where, once you capture a coordinate, it's expected to be pretty much stable. Otherwise, how often do you run through the database to update the coordinates? So, what I'm now suggesting is to run the imports in the current national datum, e.g. NAD83(CSRS), and make a note of the import datum as part of the changeset. The results should agree to 2 metres today, but will get worse over time. Then, we set up an additional function in the rails code to transform the national datum to the international WGS84 datum, just in time. In other words, predict what the WGS84 coordinates should be at the time you call the CommonMap API. Currently this would be the Helmert transformation from NAD83(CSRS) to WGS84(G1150) ~ ITRF2000, then the continental drift factors from (I think) ITRF2000's epoch 1997.0 to today. I think we would ignore tidal factors, they are not really of any cadastral significance, and in any case I don't think PROJ4 is set up to go that far. Manually entered coordinates would still assume the epoch of the time they were entered, and if they were entered in the Canadian area, they would be transformed back into the NAD83(CSRS) datum for stable storage of coordinates. To help classify which coordinates belong on which continental plates (and therefore calculate drift back to the NAD83(CSRS), GDA94 datums etc) we can take advantage of previous work, of which this seems to be the most comprehensive to date: http://peterbird.name/publications/2003_PB2002/2001GC000252.pdf Thanks, Brendan -- Brendan Morley President, CommonMap Inc. morb...@commonmap.info http://commonmap.org/ Queensland Incorporated Association 37762 Also find us on Facebook, Twitter and LinkedIn -- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] GeoData OpenAPI
hi all, I'm just wondering what is available, in terms of an Open API which contains the worlds geodata? Currenly, there is Koordinates.com (which is growing) and geocommons.com There is CommonMap (which is the 'professional' equivelentent ccBY alternative to OpenStreetMap) as a 2-way edit street and the ODBL/ccBYsa OpenStreetMap API as a one-way editable map Does anyone know of any other projects in the works? ... somewhere where i can upload .shp files (from all sources) and have the data in an API ready for extraction and use (for rendering, incorporating to other maps, and building things like garmin gps maps). Thanks in advance, Sam Vekemans Across Canada Trails -- Twitter: @Acrosscanada Blogs: http://acrosscanadatrails.posterous.com/ http://Acrosscanadatrails.blogspot.com Facebook: http://www.facebook.com/sam.vekemans Skype: samvekemans IRC: irc://irc.oftc.net #osm-ca Canadian OSM channel (an open chat room) @Acrosscanadatrails ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Fwd: [HOT] Continuing the HOT Incorporation Process
hi all, im just forwarding this off the to osgeo mailing lists, so you all can know whats going on. for those interested in seeing how you can help out, feel free to contact Kate chapman, whose email address is listed below, and see the wiki pages for details. osgeo was mentionedin the wiki page, so i just wanted to make sure tat everyon does know about this effort, especially now that osm is getting much better at dealing with the data.. cheers, sam -- Forwarded message -- From: Kate Chapman k...@maploser.com Date: Sat, 24 Jul 2010 14:28:16 -0400 Subject: [HOT] Continuing the HOT Incorporation Process To: hot h...@openstreetmap.org Hi All, So we did a first round of nominations to create the initial HOT membership. That is not to say we won't continue growing membership, we are modeling after the Apache Foundation where membership nominations other individuals to become members. We are starting slow and trying to incorporate in the U.S. fairly quickly so that we have a way to accept funding and continue the work we've been doing and Haiti and potentially move into other areas. I'd like to have a board election start coming week so that we can incorporate soon. All the incorporation information is available here: http://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team#Incorporation As well as the current membership: http://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team/Members We need to nominate people to the board out of the membership list. Please add the names of those you'd like to nominate here: http://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team/Board_Elections There are five board positions. Thanks, Kate ___ HOT mailing list h...@openstreetmap.org http://lists.openstreetmap.org/listinfo/hot -- Twitter: @Acrosscanada Blogs: http://acrosscanadatrails.posterous.com/ http://Acrosscanadatrails.blogspot.com Facebook: http://www.facebook.com/sam.vekemans Skype: samvekemans IRC: irc://irc.oftc.net #osm-ca Canadian OSM channel (an open chat room) @Acrosscanadatrails ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Re: [AtlanticCanada] OSGeo presentations at the Geomatics Atlantic conference, October 28-29, Fredericton, NB
And forwarding this to the talk-ca list From what i see, it's October sometime? But there is no reason not to have a simple OSM-Atlantic meetup sooner. Cheers, Sam On Wed, Jul 7, 2010 at 8:36 AM, Connors, Bernie (SNB) bernie.conn...@snb.ca wrote: Hello, I am helping to organize the 2010 Geomatics Atlantic conference and I would *REALLY* like to see some presentations from the OSGeo community at the conference. Anyone interested? The call for papers can be found here: http://www.geomaticsatlantic.com/call-for-papers Bernie. -- Bernie Connors, P.Eng Manager – Spatial Data Infrastructure Land Information Secretariat Service New Brunswick Tel: 506-444-2077 Fax: 506-453-3898 45°56'25.21N, 66°38'53.65W bernie.conn...@snb.ca www.snb.ca/geonb/ ___ AtlanticCanada mailing list atlanticcan...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/atlanticcanada ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
