Re: [Qgis-user] shapefiles
Hi, In QGIS the project CRS must be the same as all the rasters crs you want to display. Furthermore you need to enable on-the-fly projection to be able to display vector layers in different crs. To display lat-lon I think the project crs must be one of the lat-lon crs. This will imply that all your rasters must be in the same lat-lon crs. There is no, yet, on-the-fly projection for raster. Also note that what you've done was only cosmetic and did not reproject the vector files to the intended projection. For that you need to explicitely reproject the vector files using the reproject option of the vector menu. Hope this help. Benoit Sent from my iPod On 07 Aug 2010, at 1:37, john jera...@hotmail.com wrote: hello all, I'm new to qgis and am having a problem getting a tiff file to display with all vector files at the same time. I'm using 1.5.0 on windows vista. also can any one tell me how to get all the layers' co-ordinates to display in longitude and latitude? I've tried changing all to wgs 84 in each layer's properties-general- specify crs but can not get co-ord capture to display in long,lat. any suggestions will be greatly appreciated. thanks in advance, j. rask ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] convert the area from 1 sq degrees to hectare
glad to see you again as you know that my places at N-E of the year ( please type buol indonesia on the google maps) I STAY THERE i remember that you give me the answer before, but CAN YOU GIVE FORMULA HOW TO CONVERT 1 SQ DEG. TO .. HECTARE ..? PLEASE STEP BY STEP FORMULA YOU TYPE IT, FOR I KNOW THE WAY OF FORMULA FUNCTION I HOPE GREATEST THAT KNOW FOR MY STUDY SALAM HORMAT HERMAN DARI INDONESIA On 27 Jun 10, at 0:47, Nicklas Avén wrote: Hallo hmm, is this right Micha. Isn't the size of a sqare degree depending on how far from equator it is. Since the vertical longitudes are convergating to the poles 1 west-east degree is 0 at the pole and about 4/360 km at the equator which makes the conversion difficult. /Nicklas - Ursprungsmeddelande - On 06/26/2010 03:40 PM, herman palaquium wrote: AREA: 2.7e-05 KebunPoly: KebunAmran1 Luas: 0 PERIMETER: 0.024863 Panjang: 0 please help the area and perimeter unit The numbers above indicate area: 0.27 square units. If, by mistake, you projection units is degrees, instead of meters, then this would be 0.27 square degrees. One sq deg ~= 110 km X 110 km, or about 12,000 sq km. So the above would translate to approximately 327,000 sq meters. Does that make more sense? Again, if your units are degrees, not meters, then the perimeter would be around 2,730,000 meters. (110 km/deg X 0.2483 ) my projection is meter where is the correct 2,4863 meter or 24,863 meter or 248,63 meter or 2486,3 meter or 24863 meter or any answer the correct and than where is the correct area answer ? 0,27 ha 2,7 ha 27 ha 270 ha or any answer the correc herman indonesia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user This mail was received via Mail-SeCure System. -- Micha Silver Arava Development Co. +972-52-3665918 http://www.surfaces.co.il ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Delete column in Attribute Table
All, We have the Delete column feature in QGIS 1.4(Avilable in Attribute table and also Attribute properties)In Edit mode this button is not enabled. *How* *to* *delete* *column* *in* QGIS 1.4? Thanks Regard Akhilesh ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Delete column in Attribute Table
Dnia sobota 07 sierpnia 2010 o 10:52:51 Akhilesh Gan napisał(a): All, We have the Delete column feature in QGIS 1.4(Avilable in Attribute table and also Attribute properties)In Edit mode this button is not enabled. *How* *to* *delete* *column* *in* QGIS 1.4? The button is only enabled if used data provider supports removing attributes. For most formats it's not supported. For Shapefiles please use Table Manager plugin or any spreadsheet supporting dbf files, for Postgis one of Postgis plugins. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] convert the area from 1 sq degrees to hectare
On 08/07/2010 11:31 AM, herman palaquium wrote: glad to see you again as you know that my places at N-E of the year ( please type buol indonesia on the google maps) I STAY THERE i remember that you give me the answer before, but CAN YOU GIVE FORMULA HOW TO CONVERT 1 SQ DEG. TO .. HECTARE ..? You can *not* just convert degrees to hectares in a Lon/Lat projection. The rough figures I sent last time were just an inaccurate estimate. Afterall, as you move north or south towards the poles, the width of 1 degree changes in size. What you should do is re-project your data to some projected coordinate reference system. Then units will then most likely be in meters, and you can calculate areas very simply. I see [1] that Indonesia uses a set of Transverse Mercator projections. You might chose the one relevant to your area. In QGIS: * you can project a shapefile to another CRS by using the Save As option, and select whatever export CRS you want. * Rasters can be re-projected using the Raster Tools plugin, gdalwarp tool. [1] http://www.spatialreference.org/ref/?search=indonesia -- Micha PLEASE STEP BY STEP FORMULA YOU TYPE IT, FOR I KNOW THE WAY OF FORMULA FUNCTION I HOPE GREATEST THAT KNOW FOR MY STUDY SALAM HORMAT HERMAN DARI INDONESIA On 27 Jun 10, at 0:47, Nicklas Avén wrote: Hallo hmm, is this right Micha. Isn't the size of a sqare degree depending on how far from equator it is. Since the vertical longitudes are convergating to the poles 1 west-east degree is 0 at the pole and about 4/360 km at the equator which makes the conversion difficult. /Nicklas - Ursprungsmeddelande - On 06/26/2010 03:40 PM, herman palaquium wrote: AREA: 2.7e-05 KebunPoly: KebunAmran1 Luas: 0 PERIMETER: 0.024863 Panjang: 0 please help the area and perimeter unit The numbers above indicate area: 0.27 square units. If, by mistake, you projection units is degrees, instead of meters, then this would be 0.27 square degrees. One sq deg ~= 110 km X 110 km, or about 12,000 sq km. So the above would translate to approximately 327,000 sq meters. Does that make more sense? Again, if your units are degrees, not meters, then the perimeter would be around 2,730,000 meters. (110 km/deg X 0.2483 ) my projection is meter where is the correct 2,4863 meter or 24,863 meter or 248,63 meter or 2486,3 meter or 24863 meter or any answer the correct and than where is the correct area answer ? 0,27 ha 2,7 ha 27 ha 270 ha or any answer the correc herman indonesia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org mailto:Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user This mail was received via Mail-SeCure System. -- Micha Silver Arava Development Co. +972-52-3665918 http://www.surfaces.co.il ___ Qgis-user mailing list Qgis-user@lists.osgeo.org mailto:Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user This mail was received via Mail-SeCure System. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user This mail was received via Mail-SeCure System. -- Micha Silver Arava Development Co. +972-52-3665918 http://surfaces.co.il ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 1.5 packages available for Debian Squeeze
Finally I packaged QGIS 1.5 for Debian Squeeze too, architectures are i386 and amd64. The **unofficial** apt-gettable repository is: deb http://debian.gfoss.it/ lenny main Please report any problem with the packaging to me, not to the innocent official Debian mantainers. Due Squeeze frozen status, the packages should remain installable for a long time. -- Niccolo Rigacci Firenze - Italy ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS 1.5 packages available for Debian Squeeze
On Sat, Aug 07, 2010 at 04:45:41PM +0200, Niccolo Rigacci wrote: deb http://debian.gfoss.it/ lenny main Errata corrige!!! The repository is squeeze, not lenny: deb http://debian.gfoss.it/ squeeze main A tip: Please remove all the Qgis and Grass you have installed from the Gfoss repository, before doing the update. -- Niccolo Rigacci Firenze - Italy ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Couldn't import 'matplotlib'
Hi, I am getting the following error message when I open qgis. I am currently running Qgis 1.5 for Mac OS X. Couldn't import Python module 'matplotlib' for plotting. Without it you won't be able to run statist. I am just clicking Okay and getting on with my work. statist is present but not checked in the plugins manager. I was wondering if there were a way to get the matplotlib imported so I would no longer get the message and some day use the plugins that require it. As always, any help is appreciated. Kurt Springs ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Qqis Mac standalone fix + plugin development addition
I fixed a problem in the standalone version that caused various issues from not running to errors in python plugins. I also added (to standalone and full version) the PyQt utilities for compiling UI and resource files (pylupdate4, pyrcc4, pyuic4), so anyone can create a plugin without having to mess with installing a separate Qt and compiling PyQt, both of which are already in the Qgis app. - William Kyngesburye kyngchaos*at*kyngchaos*dot*com http://www.kyngchaos.com/ Earth: Mostly harmless - revised entry in the HitchHiker's Guide to the Galaxy ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
