نتائج البحث

International migration is a hot topic and*a global phenomenon that is growing in scope, complexity and impact. It can be a positive*force for development when supported by the right set of policies but performed unreasonably migration can cause short-term or long-term issue swhich is the case...

A Story Map Journal is an ideal choice when you need lots of maps, media, and text to tell a story. But a simple, single-section Map Journal can be very effective even when you don’t. A single-section Map Journal not only offers a great framework to showcase a single map, but also offers unique...

I have a shapefile of lines.I want the angle of every line calculated in a field. I am using the script below in arcmap, but when it encounters a line that is horizontal, it stops calculating any remaining values and gives the following error: The field is not nullable. I searched for...

Pièce jointe 7974 (http://www.forumsig.org/attachment.php?attachmentid=7974) Mis à part votre propre robe de mariée, la robe que vous portez pour le mariage de votre fille est l'une des décisions les plus importantes armoire que vous ferez. Et puisque, au cours de dîners officiels il est...

The December edition of GeoBLR will be all about Open Data for Disaster Resilience. We’ll have Eric, Alex, and Mikel in town, so come check out the talk, and hangout with Bengaluru’s liveliest geo-crowd next Tuesday, December 15 at 6:30pm at the Mapbox BLR Office. Robert Banick of the World...

This question already has an answer here: Dynamic scale dependency from attribute query using ArcGIS for Desktop? 1 answer I have a road Shapefile in ArcMap which includes three different type of roads...

I have a raster of North America and I'd like to remove the larger lakes from it, replacing them with the same no-data value as the original raster. So I downloaded Natural Earth's 10 meter lakes vector data, which has lakes conveniently ranked by scale rank: 0 for large lakes like the Great...

My map has labels, which usually should break after the 14th character using "wordwrap": wordwrap(name,14) But sometimes I need to suppress the wraping. So I need to use a "No-break space" - is there one? أكثر...

I have recently setup Geoserver, and am now working on returning GeoJSON (as JSONP) within a Leaflet application. This works fine if I do not specify the propertyName parameter, but if I attempt to restrict the attributes that get returned by using this parameter, the returned GeoJSON is no...

Because if I execute these lines for each plugin, I created a menu item for each plugin. I created many plugins and wish to place them in a new menu item (not traditionals) أكثر...

Is it possible to merge the color tables of two images when using gdal to create a single image? Or is there another way to merge said images not using a color table? أكثر...

I have a point layer (representing cities), and a set of vector layers whose features are hundreds of concentric discs, each of which I'd like to use as a clipping layer to select only the cities that lie within that disc, perform some operations on those cities, and then move to the next disc...

I have a shapefile containing multiple fields that contain tax parcel information that needs to be updated. The APN's are the common key for the records that are to be updated. I have two CSV's containing the information that is to be used to update the corresponding APN records in the...

I am developing an application using OpenLayers 3 that allows users to add,edit, and delete points as a WFS-T. I am using postgis for database creation and geoserver for hosting the data. Currently, when the user creates a new point it is saving to the database and displayed on screen...

I am dealing with some sensitive data for which providing a high resolution of accuracy of the location would be detrimental. However, the general location is not sensitive and useful to share. I would like to use Carto CSS to generalize the point visualization above a certain zoom level...

I am trying to copy selected values from several columns to one single column in the attribute table. Specifically, where columns (Grid_code, grid_code1, grid_code2.... etc) have values of 4 and 10, I want them to be copied to a new column, but to ignore all other values (which are all 0s)...

My boss asked me to mosaic and color-balance multiple Landsat 8 tiles for presentation. I tried to do that in ERDAS but it returned weird result as below: Obviously it's the black edges or nodata pixels were counted while balancing the color. Is there a way to eliminate those annoying pixels...

I am trying to join points to polygons based on whether their addresses match as well as if the distance between them is less than 2500 feet. I defined a haversine function that computes the distance between the point and the polygon using their coordinates. However I get an error that the sql...

I am currently working with climate data projected in a rotated lat/lon grid and came across this excellent 'cookbook' by mkadunc on how to manually transform rotated lat/lon to regular lat/lon: gis.stackexchange.com/questions/10808/lon-lat-transformation I’ve implemented the solution for...

The Sentinel Data Access section provides high level information regarding the Copernicus Space Component Data Access (CSCDA) and introduces the Sentinels as Contributing Missions to the Data Access Portfolio. It guides the user through the process of registration to become a Copernicus user...