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I'm making a quick choropleth map that classifies countries by income level. The in-built geocoder works mostly fine on the country names (there are also 3 letter codes in the dataset) but there are 8 or so areas that it hasn't geocoded and assigned a polygon to, for example "Isle of Man"...

This tutorial guides you on how you can use ERDAS Imagine 2014 to create a layer stack and band composite. Landsat 8 satellite images have been used in this tutorial. أكثر...

I have some data stored in sun ras data. I found several pages that state this format is supported. e.g. http://support.esri.com/fr/knowledgebase/techarticles/detail/26784I'm using version 10.3, which is not listed there, but I was guessing that if it was supported on earlier versions, it...

I have to merge few shapefiles into one and create a heat map out of it in qgis. I'm a first user of the QGIS, I tried to do it there: vector-management tools-merge files into one, but it kept to make all the time just one output file out of the layer I wanted to merge, so I didn't actually...

I am trying to populate a view in PostGIS and in this view I want it to contain a substring based on 2 string positions. See below for my code. CREATE OR REPLACE VIEW vw_actions AS SELECT ls.f_table_schema, ls.f_table_name, (SELECT substr(ls.attribute_actions_text...

I am using a PostGres Database with PostGis extension (on Windows). QGis serves as a client to access (visualize and edit) certain database-tables. I need to create a delete-log-table that saves all the information about objects I delete from a certain database-table (via QGis). So far this is...

Bonjour, j'ouvre cette discussion car n'ayant pas trouvé de solution à mon probleme. Je travail avec DBeaver, un SGBD capable de gerer et faire la maintenance sur plusieurs bases de données (oracle, mysql, PostgreSQL, Microsoft SQL). J'arrive à me connecter à la base Oracle facilement mais pas...

Bonjour, j'ai une couche de lignes simples (de type oursins) et je voudrait raccourcir tous les objets d'une certaine longueur à chaque extrémité. Je n'ai pas trouvé mon bonheur dans les fonctions de géotraitement ou dans la boite à outils (mais comme c'est en anglais, je suis peut-être passé...

We’ve released a number of new ArcGIS for State Government Solutions, as well as, updates to existing offerings we previously shipped. Some of the highlights of our new offerings include: Economic Development, Transportation and Environment and Natural Resources and Fish and Wildlife. Economic...

I created a function to search for php to postgis and believe me that this function a file with the coordinates in the search GeoJSON format. The problem is that when I do rendering the map and add the table when the query again takes this layer is not updated, you need to update your browser...

I'm trying to load some DRG data from the USGS into QGIS. The source data uses UTM coordinate and I can't seem to get it to overlay with WGS 84 vector data. I (think) I've followed the recommended procedure to transform the coordinates but obviously I'm doing something wrong. I'm loading the...

I would appreciate if someone could guide me for applying thresholding technique to input raster image using Python. I intend to extract impervious surfaces from a high resolution raster such as roads, sideways and rooftops etc. أكثر...

I am using mapsforge but I have problem with street names.I would like to develop an offline vector map for a city like osmAnd offline map or an offline vector map in mapnik format.Could you please guide me what should I do? أكثر...

I have polygon feature and want to be able to generate points inside it. I need this for one classification task. Generating random points until one is inside the polygon wouldn't work because it's really unpredictable the time it takes. أكثر...

Geographic Information Systems Demystified– July 31, 2006 by Stephen R. Galati Geographic information systems (GIS) - a central repository of geographic data collected from various sources, including satellites and GPS is emerging as one of the most intriguing and...

Another map I'm doing for the FixWikiMaps project, this one is work-in-progress. It's meant to replace the map in the article on the California Gold Rush. I took a shaded relief from Tom Patterson's Shaded Relief Archive, this particular one was created by Herwig Schutzler and is an...

Is there an easy way to convert coordinates (TM65) to latitude/longitude using ArcMap (version 10.3.1)? أكثر...

I want to create a GeoJSON string, which contains one point and a polygon. I wrote the following code: import org.springframework.security.core.userdetails.User;import org.geotools.feature.simple.SimpleFeatureBuilder;import org.geotools.geojson.feature.FeatureJSON;import...

I'm writing a standalone application using PyQGIS and I'd like to add the QGIS feature that shows coordinates and scale as the cursor hovers over the map. I need to know this mainly in case of raster maps. Can someone please guide me? Even a gentle push in the right direction is welcome...

Version: FME Desktop 2014 SP3 I have two shapes with polygons. Now i want to locate those polygons of shape A (polygon.shp) which intersects polygons of Shape B (POLYGONS) (or are within them). I am using the AreaOnAreaOverlayer and the tester. But 8 features go into the AreaOnAreaOverlay and...