نتائج البحث

I have a number of Landsat geotiff (*.TIF) file in a folder. The problem is simple, I need to search certain Landsat bands from that list and make a composite tif image. I am using Orfeo Toolbox's CLI utility. So far I have this import osdir = "C:\Documents and Settings\Landsat_image"def...

I would much appreciate some help to try to have the data as I need to have it.I have many polygons which represent different areas (with different plant species in each of them). I want to “link” some information to the polygons in order to later be able of seeing which kind of vegetation is...

What kind of steps can I take to protect data in a file gdb, or even the entire gdb, so that it can't be modified inadvertently? (e.g. by a tool like Rubbersheet that modifies data in place.) I understand the file-gdb does not have the concept of users or permissions, and that to use those we...

Esri map highlights areas in New York that are "automatically regulated adjacent waters." أكثر...

Esri map shows where sinkholes have been appearing in the UK. أكثر...

This week in Chicago, thousands of water professionals met at the Water Environmental Federation Technical Exhibition and Conference (WEFTEC) to discuss pressing issues facing America’s water sector. Maintaining America’s drinking water infrastructure has been one of the most important topics at...

I apologize for this completely rudimentary remote sensing question but I've just returned to remote sensing after originally taking a crash course ten years ago. I just calculated some quick stats in ENVI on a couple of multispectral images, obtaining a min, max, mean, and standard deviation...

I apologize for this completely rudimentary remote sensing question but I've just returned to remote sensing after originally taking a crash course ten years ago. Could someone explain to me exactly what the min, max and standard deviation values for each band represents when calculating a Quick...

Welcome to Geoawesome Quiz number 40. Today we’ll check how well do you know flags of the world. Remember to share you score with the world. And of course if you had fun please check out our other GeoawesomeQuizzes! Can you recognize a city based on Flickr photos density? DID YOU LIKE THE...

Help! I am trying to use the shortest path (roadgraph) plugin in QGIS 2.10. All of the manuals say that once it is downloaded, you just need to select it in the "View Panel" option--however, the "shortest path" panel doesn't even show up as an option? أكثر...

All,I have a large data set of federal contracts which includes two pieces of spatial data per entry (or line): the zip code in which the project took place and the zip code of the contractor. I am interested in automating the calculation of distance between these two points for each contract...

My goal is take a single table and st_union all polygons that are either touching or close to each other into single polygons I'm a C# developer who is starting to learn about PostGIS. Using the code below, I was able to accomplish this, but it seems inefficient, and there's much to PostGIS...

OpenLayers 3: Can I set a default "error tile" for when a tile is not available? Many of my map layers are zoomable to zoom level 21, but one of my basemaps is only zoomable to 18. When I zoom past this level with that particular basemap activated, the background goes white. I'd like to...

import arcpyfrom arcpy import envfrom arcpy import mapping#I'm in ArcMap 10.1 Desktop with the map openmxd = arcpy.mapping.MapDocument("CURRENT")#I have two data frames that this will need to work on but the first one is more important to work and I can work on the next data frame latermydf =...

I have a file geodatabase which includes a Raster Catalog. Up until today I've had no problems with my Raster Catalog. Now, when I pull in the Raster Catalog, I can see the footprint of my rasters. However, when I try to zoom to a specific area expecting the raster to show up, ArcMap crashes...

In my data, I have a column containing some url values; where the url is unavailable, it contains the text value "Not yet available". I want the output in the map infowindow to either display, "Not yet available" in cases where there is no url or "Link to website," where you can click through...

I currently use the pgr_kdijkstraCost() function to calculate the travel times of a few origins and destinations. But I would also like to return the distance length of these trips. Is this possible? If so, how would you go about it? If it is not possible for a k matrix, is it possible for a...

I am looking for a plugin which does raster scanning, like ArcScan. Typical QGIS Vectorization returns very bad outputs that have thousands of 'islands'. Also, can anyone please guide me on how to convert a raster in to 2 bit raster? It is required for a clean and efficient vectorization...

Do you have any experience with adding custom polygons in to the google maps? I have made polygons from raster layer. And my goal is to show this layer in google maps. For now i have experience with showing points from mysql in google maps. Thanks! أكثر...

Where is coordinate data on the geographic boundaries of wine (vitaculture) areas and their main type of wine (grape or varietal)? a GIS shapefile or geoJSON file format would be perfect. Ideally I would like the polygon areas for wines of USA or Europe along with a few attributes corresponding...