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I have DEM of karst and .shp files of caves in that area exported from "speleoGIS" Therionhttp://therion.speleo.sk/ Qgis2threejs is amazing in making visualisation of 3D sourface, which is easy to share and present.But how can I add there models of caves, when Qgis2threejs allows me to use only...

I am having trouble figuring out the correct notation for Proj4 projections with pyproj. I got the following projection in d3.js and I want to match it with pyproj on my backend to send a background bitmap for the map. var projection = d3.geo.albers() .center([0, 55.4]) .rotate([4.4, 0])...

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من الكتب التي تساير الكون الحالي والبحث عن سبل معالجة المشاكل البيئية الراهنة والتي تشكل خطر كبير على الكائنات الحية وعلى الإنسان بصفة خاصة كتاب قيم ومفيد لكل المستويات. كتاب: تحدي تغير المناخ - أي طريق نسلك؟ تحميل كتاب: تحدي تغير المناخ - أي طريق نسلك؟.pdf طريقة التحميل بعد الضغط على...

I have gridded climate data (temperature and precipitation) at 0,1° resolution and I want to downscale it into a finer scale using digital elevation model. The relationship between the climate variables and altitude is very strong, but not spatially constant. Thus, I applied geographically...

Is any body have any idea on Tree counting using lidar point data? I have a small set of data which i want to try it for tree counting. Is there any software or methodology which can give a better result in tree counting of an area. Averagely I have 12 pts/m2 only first return in my data set...

I wonder if there is a way to cut all the data in each polygon separtly when using data driven pages? أكثر...

With the answer on my previous question, I was able to set up reading a raster by blocks. I did some computation and now I try to write the result into another raster. However, the program fails with error code 139 and Segmentation fault (core dumped). My code: with rasterio.drivers(): with...

Looks like the wizards at LulzBot and BQ have teamed up to develop a fairly advanced open source laser scanner product offering for just $400. The Ciclop is fitted with a Logitech C270 HD camera and... Click Title to Continue Reading... أكثر...

how can I built a temporal relation between two feature layers. My first layer has a observation time period and my second feature has the actual observation. I would like to build the relation directly in ArcGIS using the python console. What I need is a function which: iterates through...

Apple Maps are getting better. No one can argue with that. Couple of months ago Apple finally introduced public transit to Maps. It is also working on its own Street View using*Apple mapping vans. Already 34 of them are driving across US and Europe and the number of vehicles is growing fast...

Is there a ways to - make QGis log its generated SQL Statementor to- force POSTGIS to log all interaction with QGIS? There is something strange happening to the WFS layer I retrieve in QGIS, since it does not select all data available in the respective database table. I need to find out, what...

I have a feature class whose fields are copied to a python list. Each sub-list contains a field of attribute table. I want to copy this list to an excel sheet. I am using xlwt package. The problem is the second field has geometry dataype. So it is giving an exception: Unexpected data type...

I have two points(as a pair of latlongs) on the map(close to a road) with me. I am trying to predict the amount of common traffic between these two points. I will like to use openstreetmaps to find the number of major/minor junction between the two points, along the shortest path and use the...

I have fetch data from database and draw it on qgis 2.8 as vector layer it works fine with limited data but for large data it will not work and goes into not responding stage, I am unable to understand the problem. My code is follows layer =...

I have a polyline and a point on the polyline. I need to find the distance from the from point of the polyline to that point. ICurve.QueryPoint method does the opposite thing. It gives a point based on given distance. In ICurve.QueryPointAndDistance method, specified point is a outside...

Thank you to GEB reader Kevin Thuot for letting us know about his Google Earth based World Power Map. According to the website: The WorldPower Map provides an interactive view of the global connections between geopolitics, energy infrastructure, and natural resources. The map is free, view able...

Tilemill had a feature to export the project to Mapnik XML (see here). Is there an equivalent functionality in Mapbox Studio? Some background: I'm trying to use a style like OSM Bright, edit it a little and the use in on my own tileserver (running mapnik). أكثر...

I would like to do a real simple thing:I have a bounding box B1 (ST_MakeEnvelope) and I want to see if a square of 100 meters arround a lat/long position intersects the other bounding box (B1). I have tried to do this : SELECT ST_Intersects( ST_MakeEnvelope(2.3400235176086426...

Just a noob/random question. I am completely new to IT technologies and Mapserver. How long do I need to master it? My goal is to make an online tracking system with GPS أكثر...