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This video demonstrates how to Buffer and Clip Vector data in*QGIS 2.8. أكثر...

By Ted Auch, PhD – Great Lakes Program Coordinator Waste Trends in Ohio It has been nearly 2 years since last we looked at the injection well landscape in Ohio. Are existing disposals wells receiving just as much waste as before? Have new injection*wells been added to the list of those permitted...

The search box in a published map of CartoDB isn't linked to the dataset which is shown in a CartoDB map. How can I link the search box to a certain column of a dataset. I'm a newbie here, so every help would be very appreciated :) أكثر...

I have a polygon data with area covered by the forests (data is here - https://www.dropbox.com/s/zgckliydalljw6a/sp_data.zip?dl=0). I want to convert polygons to raster. The value of each grid cell should be based on the area covered by polygon. For example, if grid cell size is 100m x 100m...

Does anyone have an example of input files for the GRASS r.inund.fluv add-on that can be shared. I am asking because I am getting some errors when I am trying to run an the files that I created and I am looking for an example that I can follow. Thank you, أكثر...

I am clipping my data points but the clipped layer is empty. I tried again and again but same problem أكثر...

I'm seeing the same problem to Clip or Intersection tool - QGIS giving empty files trying to use the Clip tool since upgrading to QGIS 2.4.0, but have not been able to fix the problem based on the responses there. I tried creating a simple example to ensure was not my data but am seeing the same...

I want to create a bar chart of some query results that I'm using in my ArcGIS Webpage. However, all of the examples that I can find only put the charts in an InfoWindow or Popup. I need the chart to be in its own stand-alone Div or "window" that doesn't have an arrow to a specific location...

After a couple years out of the GIS field I just started a new job in conservation. I requisitioned a Dell Precision T1700 with HDD (not SSD), Xeon CPU, nVidia Quadro K420, 8GB RAM. I thought it would run ArcMap great, but apparently that is not the case! I'm running 10.3.1. It slows to a crawl...

Using an arcpy script how do I get the feature attribute count per feature class in a fileGDB? Ideally I would like to output to a spreadsheet, with the feature class name in one column and the attribute count in another. أكثر...

I am editing attribute tables of multiple shape-files for a future project. I need the field data types to be very specific and uniform among all the shapefiles. I am running into the problem that the majority of these shape-files's attribute tables are all different, in terms of field name and...

I'm working on a project involving bringing together multiple subjects circling difficult to find parts of an image. The output from users is pretty awesome. Cool, right? However, what I want is to get the area of the image that has 1, 2, 3, 4, etc. users selecting it. And I'm using R...

I got the plugin to work with Toms help and now I need some help with OL3 code, I know the issue that is going on but I cant get it to work, because I dont know how OL3 code works or that much code in general. I have attached all the code from the export and I need 2 layers to load in first, the...

I have created rasters showing different types of vegetation (bushes, trees, open land) with help from lidar data. Now I'm looking for a method to turn these images into polygons. I'm using a Mac and preferably QGIS, GDAL, GRASS etc. I do have the possibility to use Windows but I'd prefer...

Recently I've noticed this issue with the open layers plugin google satellite layer where the imagery is dark and of a lower-resolution than it used to be. I frequently use this imagery with information layers on top for presentation purposes - and recently noticed that the City of Toronto...

I'm just wondering if anyone knows how to create illuminated choropleth maps( I have rates and ratios at the community district level) without converting symbology to representation ( I have an arc 10.3 basic license with a spatial analyst extension). Basically, I'm just looking to add a...

What is the difference between ST_GEOMETRY and WKT? Is ST_GEOMETRY just a database type and WKT (well-known text) is a textual representation of the data? أكثر...

I have a point shapefile with thousand of points. It has an ID code field that supposed to be unique. Every now and then the data entry clerk wrongly type the id creating duplicates.Right now I'm manually scrolling the field to find the duplicate.Is there a sane way to do this using the Search...

I have a directory with several shapefiles. How can convert all these shapefiles to MapInfo with ogr2ogr. I know how I can convert one file. And I can make a batch script writing a line for each file. But isn't there an easier way to convert all the files in a directory (and subdirectory)...

I'm trying to add a vector layer with a wfs layer and it's not working.Can anyone point a solution? Openlayers code: var wfs = new OpenLayers.Layer.Vector( "Stavros Features", { strategies: [new OpenLayers.Strategy.BBOX()]...