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Is there a way to do a random value calculation within a range in QGIS? I have been able to do this within ArcMap Field Calculator with the following code: Dim max, minmax=20min=5x=(Int((max-min+1)*Rnd+min))__esri_field_calculator_splitter__xThanks أكثر...

What is your neighborhood really like? *In 1988, Michael Weiss, in his fascinating book*The Clustering of America, introduced the idea that neighborhoods can be grouped in terms of lifestyles, consumer spending, demographics, and socioeconomic variables. Part of a larger field of study known...

What are the various data fields provided by Tom Tom Maps (or google maps, openstreetmap etc.)? By data fields I mean information such as latitude, longitude, elevation, road type, speed limit, slope, curvature etc. about a user specified location. Please list such data fields provided by any of...

I'm new to oracle spatial, and am Trying to copy data from from Arc FeatureClass to another. I have tried the following, but am getting a 'PLS-306: wrong number or types of arguments in call to 'ST_GEOMETRY' ' error. I'm sure it is something very small. insert into newFC...

Can we publish FME Workbenches to GitHub, to enable sharing these with other organizations.A custom transformer might be a solution? thanks أكثر...

I have a map document file (.mxd) with a size of 0.3 MB. I also have two layer files (.lyr), containing large rasters. Together they are 16.2 MB. If I add the two layer files to my map document in ArcMap and save, it becomes 16.5 MB large. This leads me to believe that all the data in the layer...

I need some advice on choosing a GPS setup to map estuarine habitats in the field. Our SA estuaries are often very narrow (1 to 2 km wide) and habitats are small. We distinguish between supratidal salt marsh, intertidal salt marsh, reeds and sedges, among other habitats. Reeds and sedges...

I have around 20-30 tiff files all georeferenced and I am trying to mosaic the data however I can't seem to remove the border of these historical scanned images. I have tried shrinking the footprint and I still can't get rid of the border. Any suggestions? أكثر...

I am trying to use google imagery in QGIS through the Google maps engine connector plugin. I relatively new to QGIS and need some help. What I want to do i use the google maps in QGIS and then print them on a custom 3ft by 3ft map for a client. Is this possible with the plug in? Also if it...

I´ve downloaded qgis_hello_world from GitHUB (https://github.com/thebigspoon/qgis_cpp_plugin_cookbook) And got the code compiled with Visual Studio 2012 express on a win7 machine (though I had to comment out the Q_OBJECT macro). But it is unclear to me where to put the dll afterwards. I´ve...

I have a shapefile containing numerous point features with different coordinates showing the locations of schools for an area. When I add this file to a blank map in ArcMap all of the separate individual points are shown on the map. However I have created a separate map that shows the road...

I would like to use a click interaction to select multiple features (I have 2 vector layers) and show their names inside a infobox. What is wrong?na var selectClick = new ol.interaction.Select({ condition: ol.events.condition.Click, toggleCondition: ol.events.condition.shiftKeyOnly, });var...

so I'm new in QGIS and currently trying to convert my ArcGIS-layers into QGIS. One of these layers is a slope gradient raster. I want to change the symbology so that a specific rang of gradients will be shown as one specific color in the map (pic on the right) instead of there being continuous...

This question already has an answer here: How to create a hole in a polygon in QGIS? 1 answer When I am creating a polygon inside of another polygon, both the polygons are selected,Please help me to...

I am trying to create an autocovariate variable for use in an autologistic regression. I have a GIS point Shapefile of the response variable, in binary form for presence/absence of a plant species. I also have a raster depicting the predicted probability of occurrence of this species, which...

Does anybody know a souce where I can find a sample LAS file that has electric utility poles?Like seen here - http://resources.arcgis.com/en/help/main/10.1/index.html#//015w00000040000000 أكثر...

GIS related video on the proposed high speed rail system in Texas from Houston to Dallas. The video shows my attempt to acquire the GIS data files for this project from TCR(Texas Central Rail), FRA(Federal Railroad Admin), and TXDOT(Texas Dept of Transportation). أكثر...

[MapInfo 12.x] Requête spatiale de type "intersect" sans prendre en compte les voisin Bonjour, J'ai un petit problème de requête spatiale où j'ai peine, à trouver l'opérateur spatial ou le script map basic qu pourrait répondre à mon besoin. Je souhaite avoir la liste des communes qui sont...

Here's a long overdue point release update for the 2.6 series of MapGuide Open Source. There's plenty of useful bug fixes in this release (including a long overdue fix for WMS GETFEATUREINFO), and is a recommended upgrade from 2.6. All the fixes in question can be found in the release notes...

Summary: A new USGS study published in the journal River Research and Applications presents an extensive analysis of temporary (intermittent) streams across regions in the conterminous United States where such streams are prevalent (in the western plains and southwest) and describes their...