نتائج البحث

I wanted to know what drawing methodology is used by qgis renderer like gdi,gdi++ or opengl. I have searched its documentation http://qgis.org/api/classQgsMapRendererJob.html http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/composer.htmlbut didnt found any methodology used by its...

var vectorSourceJsonp = new ol.source.Vector({ format: new ol.format.GeoJSON(), loader: function(extent, resolution, projection) { var url = 'http://localhost:8082/geoserver/wfs?'+ 'service=WFS&request=GetFeature&'+...

I have a DEM of my area.I did watershed analysis with Arc Hydro. I want to calculate "Volume of water in a basin with reference to incremental height of DAM" Is there any method, tool to give output with info of at h1-v1, h2-v2,......hn-vn(at h-height , v-volume) in tabular or any other form...

I*am trying to run an object-based classification using R. The Landsat images were segmented using Monteverdi (Orfeo Toolbox) and training samples (segments) were selected. My problem is that the results (confusion matrix) are represented based on the total number of pixels per class instead...

Hey guys i found this simple openlayers example online , the map initialization looks like below: var styles = [ 'Road', 'Aerial', 'AerialWithLabels', 'collinsBart', 'ordnanceSurvey'];var layers = [];var i, ii;for (i = 0, ii = styles.length; i < ii; ++i) { layers.push(new ol.layer.Tile({...

I want to create customised tools(similar to plugins) in QGIS by using VB.NET. How to achieve this? أكثر...

I have a personal geodatabase - based on an MS Access .mdb file - from which I cannot delete an old feature class. The tables relating to the feature class have been deleted from the .mdb, but the feature class remains visible as part of the geodatabase in ArcCatalog 9.3. I cannot delete it...

My question is similar to Extract raster values at points, but perhaps more complex. How to extract the attributes of clustered cells around a point/points? For example, I have many vegetation plots in 100m x 100m and have to examine the spectra at the points over SPOT Data (satellite...

Question également posée ici: http://georezo.net/forum/viewtopic.php?pid=275673 --- Bonjour le Kirghizstan a récemment développé un nouveau système de coordonnées national (Kyrg-06), qui a une valeur légale dans le pays mais qui n'est pas encore dans la liste des systèmes de coordonnées...

03Surface Interpolation This exercise will guide you through a Method to generate a New finer resolution of a DEM. 1. Add the dem grid to ArcMap. Check if the grid has a 30 meter cell size and a UTM projection. 2. Enable Spatial Analyst extension From Customize > Extension. 3. Open...

Las Isolيneas son lيneas que conectan puntos de igual valor (como elevaciَn, temperatura, precipitaciَn, contaminaciَn o presiَn atmosférica). La distribuciَn de las lيneas muestra cَmo cambian los valores a través de una superficie. Cuando hay poco cambio en un valor, las lيneas estلn mلs...

<div> <span style="font-family: Tahoma; font-size: 9pt; "> أكثر...

<div> <span style="font-family: Tahoma; font-size: 9pt; "> أكثر...

Currently am working on OGC Table Joining Service (TJS) (Web service for joining attribute data and spatial data), Can any one describe on how to convert attribute data to GDAS(Geographical Data Attribute Set) format which is the XML format accepted by TJS...

What I'm trying to do is to split up that selected islands as single-part features/ polygons. But not all of them, you can see some little dots around the islands are like a part of the island. So I need to separate them by selecting. How can I do that? أكثر...

var vectorSource = new ol.source.ServerVector({ format: new ol.format.WFS({ featureNS: 'http://openstreemap.org', featureType: 'water_areas' }), loader: function(extent, resolution, projection) { var url =...

I am having a big issue of this G_malloc Error while using a module of Grass (6.4.4) (r.stream.extract) in R. Initially I thought my computers configuration was low, So I switched to 8gb Ram 64-bit Windows 10. And I found error occurring again. I tried setting the g.region to the current using...

In the image given below, solid lines are showing as road elements and points are showing as data collected for those road segments. I want to update road element id to the points shapefile. "Near" tool of ArcMap has almost solved this problem except for the points lying in red region (marked in...

I have a Landsat 8 image which I clipped with a polygon shapefile. It works fine, but I'd like to preserve each band name in order to improve my workflow speed. The output raster saves each band as "clip1", "clip2"... and so on, what I'm looking for is something like "Blue", "Green", etc. I'm...

Imagine you can earn a GIS online certificate at some of the best institutes in the world without leaving your country... or even the comfort of your own home. [...] The post Making the Grade with a GIS Online Certificate Program appeared first on GIS Geography. أكثر...