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Le Salon de la Géomatique du Festival International de la Géographie de Saint-Dié-des-Vosges c'est déjà dans une semaine ! http://www.fig.saint-die-des-vosges.fr/geographie/salon-geomatique Retrouvez le programme complet : http://www.fig.saint-die-des-vosges.fr/291-programme-2015 Des... أكثر...

library(rgdal) x class(x)//[1] "SpatialGridDataFrame"//attr(,"package")//[1] "sp">spplot(x) // Error : cannot allocate vector of size 232.1 Mb>reflconv(x,2.0000E-05,-0.100000)//Error : cannot allocate vector of size 464.2 Mb أكثر...

I have 2 input rasters of rainfall for summer/winter and I want to make a 3rd output based on which one has the max value for that cell. So if the max value at the cell is summer it will assign 1, or winter 2 for the new output raster. That way I will have a raster showing which season has the...

i am expected to complete a single script that accepts the input varlables, creates the geotiff from the provided array (already done) completes all necessary tasks to provide a layer with a customized SLD for styling within Geoserver (2.7). but i have no idea of how to start the project,any...

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اليوم عيد الأضحي كل سنة وجميع المسلمين وغير المسلمين بخير فليعم السلام كوكبنا ولتتراقص القناديل على شطوط البحار والمحيطات فرحا وسعادة أكثر...

Pinde Fu and Paul Rich’s article concerns solar radiation. They made isolation maps from digital elevation models in order to apply the model for spatial interpolation of different topography aspects in the world. The maps are best utilized in forest and agriculture. Often, geographical...

After last week's post looking at the landscape of free and open source GIS software, the next logical step is looking at open GIS data. This video looks at reference data. I am still deciding on what to do the next video on...the choices are a) Open data portals, b) novel data types, social...

Here is the basics of my code: this.infoStopSource = new ol.source.Vector({ url: stops_gpx, format: new ol.format.GPX(),});var infoStopv = new ol.layer.Vector({ source: this.infoStopSource, style: stopStyle});this.map.addLayer(infoStopv);var f = this.infoStopSource.getFeatures();The...

What is the equivalent of ArcGIS's "Feature Class to Feature Class" in QGIS? I have a layer in QGIS to which I have joined several csv tables. I want to save this as a permanent and independent feature class. However, when I right click on the layer in the table of content and select "Save...

I am completely new to JS and openlayers, i am trying to figure out a way to validate the received layer with the OpenLayers.Protocol.HTTP call. I want to validate that it is in the correct format (GeoJSON). I have tried callback function, and it doesnt seem to work. Also i have tried through...

Im trying to access a WFS where the feature count is limited at each extent (ie layer with 1000 feature with a limit of 100 for extent). Whether or not its to maintain performance or purely just being restrictive, It's preventing me from viewing/extracting the entire dataset at once. Is there a...

I saw a great interface to FME with Python What you guys are doing with it? I want ideas. أكثر...

Is there any difference in rendering performance between using a osm2pgsql vs imposm imported PostGIS DB in Mapnik? Or asking it differently, is there any downside of using imposm if I only want to support full imports? I'd be using OSM Bright style, which supports both, and I've seen that...

I am using ArcMap 10.0 and am confused by my Extract by Mask output rasters. I hope to eliminate the black background from three Landsat ER Mapper images so that I can mosaic them. Originally I attempted to do this using the Clip function in the Raster Processing submenu, but saw via the...

The finalists for this year’s Be Inspired Awards have been announced by Bentley Systems. I have the privilege this year of being a juror. As many of you know I consider this event to be number... Click Title to Continue Reading... أكثر...

I have a file that was output from Pix4D as an mbtile, along with the actual image files in the google earth tiles folder, I want to use them as the basemap in a mapbox project but wondering how I accomplish this? It seems confusing if I am supposed to do something with them in Tilemill, or if...

I have insect traps data with several hundreds insects caught every day. In this paper, authors say "Running the model using the number of mosquitoes per trap-night resulted in clustering of high probabilities of occurrence around individual collection sites." How comes that they used the...

This question already has an answer here: Controlling label/attributes of grid/fishnet index using ArcGIS for Desktop and ArcPy? 2 answers I've created a large grid of 1 sq-mile cells to use for QC...

I'm having issues setting a row value to 0 when joining a csv to a shapefile. When the shapefile value is not in the csv, the row is getting set to 0 instead of null. This is a huge problem as i'm showing 0 change instead of no data. I tried row.setValue(field, None) and row.setNull(field) and...