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If you have an array with x, y and z dimensions, how can I create an array of x, y dimensions that holds a count of how many z values at each location (x,y) are noData? I would prefer to use numpy and python for this task, but could also use arcpy (I am working with raster data) or R...

First of all I need to say that I'm complete new to this. I've been mandates to migrate a web application (written in Python and using PostGRE/PostGis) on a Windows XP box (!!!) to a more recent Windows Server OS. Since MS4W was used on the old installation we install the same on the new one...

I need to access ST_StraightSkeleton() function. At the moment i have a Postgresql instalation PostgreSQL 9.3.4 compiled by Visual C++ build 1600, 64-bit installed via EDB with Postgis 2.1.7 on a windows machine that seems not have SFCGAL installed. 1st What would be my chances of having...

Bonjour, J'ai un fichier .csv avec une colonne nom_commune que je joins à une couche .shp par cet attribut nom_commune. Or dans mon fichier .csv, plusieurs lignes ont le même nom de commune. Lorsque je fais la jointure, QGIS ne garde qu'une seule ligne. Comment faire pour ne pas perdre de...

If you have any doubt about the demand for mobile mapping services this press release from Michael Baker announcing they have doubled their system count from two to four should help to persuade you.... Click Title to Continue Reading... أكثر...

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Knowing that, in SAR images: Intensity_image = Amplitude_image^^2. Which of the intensity or the amplitude should be calibrated and used for the classification of geophysical features? أكثر...

I'm using ArcGIS 10.3, with the extension of "network analyst" I'm using the tool "Location-allocation analysis" I have two shapefile 1) I have a shapefile of customers to the field of "Distribuidora" 2) I have a shapefile of facilities in the field of "Distribuidora" I need to make a...

I have problems to release my gdb in ArcGIS10. My tool works with an local gdb, but I failed to release it after the process.In Ag9.3 I can release it simply by Marshal.ReleaseComObject(workspace), but this doesn't work in AG10. Also releasing all FeatureCursors doesn't help. Only closing the...

version: 2.4.0-1ubuntu2 I'm following a web tutorial at lynda.com about QGIS.In one of the first videos I see there's this preview of raster files. There's the .dem files and the .ecw files among the tutorial example files. I can preview the .dem files as in the video, but unlike the authors...

I have a polygon containing lots of bodies of water and only want to display the bodies of water over a certain size. Am I on the right track with this python code? def FindLabel ( [AreaSqKm] ): if int([AreaSqKm]) > 50: return [AreaSqKm] It verifies and shows a sample text string...

i have a multiple Geo-referenced tiff the Problem Is : i want to combine Tow TMS layer on one map.i tired all want i can do but without any result I'm still working on it please if there is somebody to help me this is explanation (for problem ): this is an sample of tow tiff on Qgis...

I just realized that I have Geo-TIFF's in the samme coordinatesystem but different resolution. DOP20 (20cm=1px) and DOP10 (10cm=1px) mix.Now wanted to use gdalwarp to transform the DOP20 TIFF into DOP 10.The commandline should be simple gdalwarp.exe -tr 20000 20000 -r bilinear in.tiff...

version: 2.4.0-1ubuntu2 I'm following a web tutorial at lynda.com about QGIS.In one of the first videos I see there's this preview of raster files. There's the .dem files and the .ecw files among the tutorial example files. I can preview the .dem files as in the video, but unlike the authors...

I have a polygon containing lots of bodies of water and only want to display the bodies of water over a certain size. Am I on the right track with this python code? def FindLabel ( [AreaSqKm] ): if int([AreaSqKm]) > 50: return [AreaSqKm] It verifies and shows a sample text string...

i have a multiple Geo-referenced tiff the Problem Is : i want to combine Tow TMS layer on one map.i tired all want i can do but without any result I'm still working on it please if there is somebody to help me this is explanation (for problem ): this is an sample of tow tiff on Qgis...

I just realized that I have Geo-TIFF's in the samme coordinatesystem but different resolution. DOP20 (20cm=1px) and DOP10 (10cm=1px) mix.Now wanted to use gdalwarp to transform the DOP20 TIFF into DOP 10.The commandline should be simple gdalwarp.exe -tr 20000 20000 -r bilinear in.tiff...

PyConES es la conferencia nacional sobre Python m أكثر...

Por Gina McCarthy, administradora de la EPA Estoy muy emocionada de anunciar que nuestro colega de la EPA Jacob Moss es el ganador de una de las prestigiosas Medallas de Servicio Samuel J. Heyman a EE.UU., también conocido como los premios “Sammie”. Los Sammies son galardonados cada a أكثر...

we did a photo survey with a GPS equipped camera (1800 images), then to improve accuracy we did a survey with a total station and renamed images with points labels.Now I need to write the new coordinates into the images EXIF data (re-geocode images), using the image name as the matching field...