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Is there a way to relate 2 tables based on 2 distinct fields and be able to open the related table for each distinct field? Say I have a short list of 500 addresses of interest. I would like to relate both the parcel number and the address name to the same general address database (which also...

when I setup the second page it override to page 1, how to clear page 1? أكثر...

I started using the GDAL Library in a c++ project. It is a great library, but I am a bit stuck right now with different aspects of it.What is the best way to use gdal_contour in my c++ programm? Should i use the system() function or simply grab the source and use it?I tried to get the contours...

I have a problem saving my output from the following script. I can see an un-displayable image at the intended location with the same name as the first intended output. Mostly my gis crashes down and creates an error report. I have checked my code against the ones on the internet i cannot find...

I have a large raster file (245295396) cells and stacks of rasters having 4 layers each which lie in the extent of this large raster. To start with I am trying to get value from one stack (3 channels) and for the same zone from the large raster. Every things works fine, just the extraction from...

I have a solr instance with a few million items that is being queried for geographic coordinates and some rich media (like tweets). These are sent to a GPU for rendering. The resulting data is presented as a series of dots that overlay an OpenLayers map. Clicking on a dot shows the media...

I have a set of polygons (available here: http://ulozto.cz/x39ELbFt/polygons-zip) created in QGis and processed in R. I would like to know if they are overlapping or not, and if yes, where is the overlapped area (and between which polygons)? I know that to figure this out I can use tools...

How can I programmatically create ArcGIS Image Service and add that service to my MXD file programmatically? I am using C# .Net. أكثر...

I have been struggling with how to find the row number and column number forparticular points in any raster map. My raster details: columns and rows: 720 360 cell size (0.5, 0.5)How can I know the row number and column number by pointing the cursor at any location in the map? أكثر...

I am attempting to map the paths of burrow on an oriented photo in order to generate an xy xy chart to run a lineation analysis. How do I get a photo into ArcGIS, orient it, and trace lines that will give me a data set (that can be copied and pasted into Excel)? I'm pretty new to GIS...

After an intense start, Alaska’s wildfire season has mellowed a bit. أكثر...

I am trying to use the NOAA API to get data on monthly mean temperature and precipitation for the past 10 years. I wrote the following python code (the variable "token" in the code is the API token that I got: import requestsurl =...

I am working with an imbalanced (5%/95%) presence/absence dataset. I'vecreated 25x25 m. raster cells that are categorized '1' or '0'. My Geary's Cresult (~0.993) and Moran's I result (~0.0045) are each nearly ideal- theexpectation for each, respectively, would be 1 and 0 in the absence ofspatial...

Though i am using QGIS, yet I am not confined by tool (can use an entirely different tool or a plugin for QGIS) usage.. Only aim is to get the following: I am reading various shapefiles in QGIS and I wish to have different colors in the same shapefile (or layer) for - Each polyline Every n...

On Friday, July 17th, many ArcGIS Pro users saw a small window pop up on their computer screen. It announced to them, and to the world that a new version of Pro is available to download. I often find myself avoiding the seemingly endless software updates. Usually, I’m in the middle of a task, I...

A bloom of algae continues to grow in Lake Erie and surrounding waters. أكثر...

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I've been following along the examples from the book "Building Mapping Applications with QGIS and for the life of me I can't figure out why my shape files aren't loading and displaying in the app window. I use a run.sh file to set up the environment: export PYTHONPATH="/usr/share/qgis/python"...

I'm trying to use GDAL polygonize to run a batch convert but I cannot for the life of my figure out a way to get it to read a text file as input that contains all of the commands. Do any of you know the correct command to run this conversion in one step so I don't have to do it many times over...

What is the difference between the "feature to raster" and "polygon to raster" tools I am currently trying to get a group on connected polygons that are within the same feature to a raster so I can reclassify it for cost analysis. I noticed that ArcGIS for Desktop has a "feature to raster" and...