[Qgis-user] New symbology: no border
Hello, I have a vector file with modelled data of regular grid cells. I would like to display the values as graduated symbol without any border. I set the proder to zero in the symbol properties but still get a border around the cells. Please help me here. Best regards, Timmie ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] New symbology: invert color scheme
Hello, how can I invert a colour scheme in QGIS? I would like to have red -> yellow in stead of yellow to red. Thanks in advance, Timmie ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re: Projection of Shapefile export
Roland, That is brilliant. Nice work. I get a similar result to Ken. Offset between AGD84 and GDA94 in WA is 36m using your file. I was even able to export shape files and reimport them into the correct position suggesting the CRS has stuck. (AGD84 / AGD66 prj files look identical to me and yet the data still imports correctly ie 5m offset) As far as I can tell, QGIS is not recognising these projections labelling them all as WGS84 on import. -- Brett Adams Spinifex Geophysics 0438 861 974 SKYPE:brettadams_spinifex ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Projection of Shapefile export
Roland, I incorporated your srs.db but the translation falls about 30m short (in Melbourne) and about the same distance out at a control point in southern Tasmania. I see you use the National parameters that '... have an estimated accuracy of about 1 metre.' and are most accurate around Canberra (surprise). Geoscience recommend use of their distortion tables (xxx.gsb) for more accurate work Australia-wide. Can you incorporate the parameter reference to the distortion tables in the srs.db? I, like Brett, am out of my depth here. Regards Ken -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Projection-of-Shapefile-export-tp5536736p5564786.html Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] getting values from a WMS layer
Hi, > Is it possible to get values from a WMS layer e.g. load WMS raster > layer from NASA or some other server then have your points overlayed > and use the point sampling tool? This would work if you have loaded > your own raster layer but with WMS layers it does not seem to work is > this only possible with certain types of WMS servers/layers? it depends on how the server is configured, not a client option. cheers -- Giovanni -- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Google Layers proxy
2010/9/23 Maurício de Paulo : > Hi, > I'm currently using google layers behind a proxy network that requires user > authentication. Many QGIS' plugins already connect through authenticated > proxies but googleLayers can't. I've looked at the code and found out that > the urllib use doesn't support authenticated proxies. I've also found out > that urllib2 supports. > I'd be glad if the dev could change the used library. I've made a few tests > and the proxyhandler class of the urllib2 can handle the authentication but > it would need to be read from qgis' settings. > > > As far as a workaround I've told the proxy to ignore mt*.google.com and > maps.google.com to make the plugin work throught the proxy. > > Best regards, > Mauricio Hi Mauricio, can You provide a patch ? Ivan ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] getting values from a WMS layer
Is it possible to get values from a WMS layer e.g. load WMS raster layer from NASA or some other server then have your points overlayed and use the point sampling tool? This would work if you have loaded your own raster layer but with WMS layers it does not seem to work is this only possible with certain types of WMS servers/layers? -- The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302). ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Google Layers proxy
Hi, I'm currently using google layers behind a proxy network that requires user authentication. Many QGIS' plugins already connect through authenticated proxies but googleLayers can't. I've looked at the code and found out that the urllib use doesn't support authenticated proxies. I've also found out that urllib2 supports. I'd be glad if the dev could change the used library. I've made a few tests and the proxyhandler class of the urllib2 can handle the authentication but it would need to be read from qgis' settings. As far as a workaround I've told the proxy to ignore *mt*.google.com* and * maps.google.com* to make the plugin work throught the proxy. Best regards, Mauricio ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] qgis vector editing/digitisation
Hi all, sorry for cross posting. kindly forgive me I would like to make a standalone vector editing application by reusing existing qgis code ? Is it possible? which part of code is responsible for vector editing/digitising ? what all includes from Qgis do i need to use? Any please help me with an example -- Rashad ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re: Projection of Shapefile export
Brett / All, I had a go at changing the AGD66 and AGD84 definitions in the QGIS database (srs.db) to include the towgs84 parameters and it appears to have worked. The attached image shows the same point assigned to GDA94, AGD66 and AGD84 with the offsets as expected. The updated srs.db can be found at http://dl.dropbox.com/u/9546967/srs.db if you would like to use it. The new srs.db was generated by running the following queries on srs.db in SQLite Database Browser UPDATE tbl_srs set parameters=replace(parameters, '+ellps=aust_SA', '+a=6378160 +rf=298.2555 +towgs84=-117.763,-51.51,139.061,-0.292,-0.443,-0.277,-0.191') where description like 'AGD84%' UPDATE tbl_srs set parameters=replace(parameters, '+ellps=aust_SA', '+a=6378160 +rf=298.2555 +towgs84=-129.193,-41.212,130.73,-0.246,-0.374,-0.329,-2.955') where description like 'AGD66%' Not sure how this compares to Ken and Giovanni's method. Cheers, Roland -- ROLAND HILL Director Four Winds Technology Pty Ltd Ph/Fax : +61 (0)2 6366 9425 Mobile : +61 (0)41 880 7472 roland.h...@fourwindstechnology.com.au Privacy and Confidentiality Notice The information contained herein and any attachments are intended solely for the named recipients. It may contain privileged confidential information. If you are not an intended recipient, please delete the message and any attachments then notify the sender of miss-delivery. Any use or disclosure of the contents of either is unauthorised and may be unlawful. All liability for viruses are excluded to the fullest extent permitted by law. On 23/09/10 15:47, Brett Adams wrote: Ken, That's a legendary effort if your getting sensible results with the icsm files. Do you think the format is suitable that it could be used in a sponsored bug fix? I gave this a shot myself but couldn't get it run at all, but then I have no idea what I'm doing so thats no real indication. I've had no success in getting parameters to stick (AGD66, AGD84 or GDA94) on shape or mapinfo files. Following solution was proposed by Roland Hill (22/09/2010 8:59pm) If your Custom CRS database does not appear to be working properly (ie you can see your custom CRS, but it isn't sticking to your data properly), then try to find your custom CRS database (qgis.db in your home directory on Linux, I guess it is in Application Settings or something similar in Windows) and delete it in case you have an old one with an incorrect format. Brett On 23/09/2010 12:47 PM, Ken Norris wrote: As Micha suggested, the National AGD66 distortion grid at http://www.icsm.gov.au/icsm/gda/gdatm/national66.zip and AGD84 distortion grid at http://www.icsm.gov.au/icsm/gda/gdatm/national84.zip seem to be the way forward. When unzipped, put into the proj directory (for me usr/share/proj) and coupled via the +nadgrids= parameter in a Custom CRS, it seems to yield the correct transform when tested. +proj=utm +zone=55 +south +ellps=aust_SA +nadgrids=AGD66.gsb +units=m +no_defs (I renamed the unzipped distortion file 'A66 National (13.09.01).gsb' file to 'AGD66.gsb' for convenience) But I can't make the parameters stick in the CRS of a vector file using the override facility. Any ideas? <>___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Projection of Shapefile export
Correction, the AGD84 data do transform if used for areas where AGD84 was used. I tried a sample from Victoria earlier, where AGD84 wasn't used — I don't think the distortion table covers it. Thus for AGD zone 53 +proj=utm +zone=53 +south +ellps=aust_SA +nadgrids=AGD84.gsb +units=m +no_defs +wktext where 'AGD84.gsb' is the re-badged 'National 84 (02.07.01).gsb' distortion grid from the http://www.icsm.gov.au website -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Projection-of-Shapefile-export-tp5536736p5562452.html Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Re: Projection of Shapefile export
Bullseye Giovanni, thanks The Custom CRS sticks and works with OTF projection of the AGD66 data to GDA94 The parameters now: +proj=utm +zone=55 +south +ellps=aust_SA +nadgrids=AGD66.gsb +units=m +no_defs +wktext But unfortunately the AGD84 data does not reproject correctly when using the same methodology. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Projection-of-Shapefile-export-tp5536736p5562099.html Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re: Projection of Shapefile export
Hi, > But I can't make the parameters stick in the CRS of a vector file using the > override facility. Any ideas? if you use the +nadgrids parameter you must also include also the +wktext parameter example: +proj=tmerc +lat_0=39.66 +lon_0=-8.1319062 +k=1 +x_0=20 +y_0=30 +ellps=intl +units=m +no_defs +nadgrids=ptLX_e89.gsb +wktext also, if you are reprojecting to a projected crs, the target crs must include the +towgs84 parameter example: +proj=tmerc +lat_0=39.668258474 +lon_0=-8.133108333465099 +k=1 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs +towgs84=0,0,0 The annoying thing is that every tool that allows reproject vectors (example "save as...") does only let choose the target crs, so you first have to save the vector in what need to be your source crs. On the other hand the warp tool in the "raster" menu let the user choose the source crs, so the transformation can be done in just one step. cheers -- Giovanni -- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
