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Monsoon rains drowned the landscape in Laos and Thailand. أكثر...

OpenDroneMap continue to progress with more contributors and updates. it is*exciting about the possibilities of what ODM will do in the UAV space. This video cover the newly added feature of orthophoto output. You can see the sample imagery here in the odm_outputs...

I am a newbie with raster data. Maybe this is a trivial question. Can a single pixel of a raster hold more than one value? أكثر...

I'm developing a very simple QGIS plugin to calculate raster average by using GDAL. It uses a QgsMapLayerComboBox and a filter to select only raster layers. However, it needs to select twice a layer at the Combo Box to produce the expected results. The snipped code is: ...def initGui(self)...

There is a situation where I have annotation in dgn file as an attribute info, eg: it is circumference of trees trunk. I have a feature class in esri file geodatabase named ‘tree’ which has an attribute ‘tree circumference’. Is it possible to copy these annotation values into the appropriate...

Many of us have struggled to get a list of GIS services that are available on the internet. Specifically map services that expose OGC based interfaces like WMS, WFS or Web Service interfaces like REST, SOAP etc. For instance, just for oceanic and marine data there are several online catalogs...

CINCINNATI -- 1000’s involving civilian drones are required throughout U.S. skies inside several a l... أكثر...

01 Opal with dendrite أكثر...

Use a GPS directly connected to QGIS to get “accurate” positions for your field collection. For this to work your GPS needs to put out NMEA on a serial interface. That can be a traditional serial port, some form of USB/serial adapter or a serial port emulated through USB and software. Most GPS...

NMEA-2000 Message 129540 ("GNSS Sats in View"): SNR field is integer or decimal? If you're familiar with the older NMEA 0183, there was a "GSV" record for reporting information about GPS satellites in view, including their SNR (signal-to-noise ratio, also know as carrier-to-noise-density...

I have the following shapefiles: Polyline: Detailing a road network. Polygon: Containing approx. 2000 polygons enclosing sections of that road network. Point: Containing numerous (OS Addressbase) points falling within each of the polygons. Using ArcGIS for Desktop, I would like to identify and...

i am trying to find out a way to copy entire fields(columns) in a feature class attribute table as lists inside a master list (python). to illustrate it. consider the table below. so the list should look something like this. talukas = [[26190, 26191, 26192, 26193, 26194, 26195, ...]...

Does GPS correct for continental drift, and if so, how? (I'm mainly interested from the perspective of consumer devices such as smartphones.) أكثر...

تم إعداد من قبل : حسام سليمان عيد يحتوي هذا المرفق على ما يلي: الفصل الأول: مفهوم جغرافية النقل وميادينها ومناهجها أولا: أهمية وتطور جغرافية النقل. ثانيا: علاقة جغرافية النقل ببعض العلوم. ثالثا: مفهوم جغرافية النقل. رابعا: ميادين البحث في جغرافية النقل. خامسا: مناهج البحث في جغرافية النقل. نبذة...

On QGIS 2.10, running on Ubuntu 15.04 Linux, I have a project file that has a fairly large number of mainly shapefile layers, which gets to 99% on the slider to the right of where it has a message saying 'Loading layer name of last layer' and then just hangs there, for a long period of time...

Given two straight lines defined by two points each, I want to get the line which separates points nearer to line a from points nearer to line b. The attached PostGIS code is an example case, it finds points of equal distance by creating a lot of buffers around the lines and intersecting them...

I'd like to perform a band calc in some raster bands. What I am trying to do is import the raster (ENVI format) like array with gdal, then I do the calc but when I try to save the raster I get an error: 'NoneType' object has no attribute 'SetMetadata' This is my code that I take from...

Can anybody tell me how to load a KML file in the Google Earth API? Is it even possible? أكثر...

The Django docs say to use createdb -T template_postgis geodjangobut I already have a database set up. While trying to find out what this actually does and a way to apply it to an existing database, I found this on postgis.net: -- Enable PostGIS (includes raster)CREATE EXTENSION postgis;--...

I have tried: layer.getSource().dispatchChangeEvent();map.render();How do I refresh layer in openlayers 3.8? layer.redraw(true) used to work. أكثر...