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I have the following code in which I import to a variable the number of points I want, that will produce the specific number of points and viewsheds, and compare each other to find the 3 with the biggest visible area. The problem I am facing is that I cannot run the entire code, but only if I...

I have raster data of NDVI and precipitation for 2000-2014. I want to find correlation of NDVI and precipitation for 1-,3-,6-,12 months. Is a way to do it this in ArcGIS? أكثر...

I have dozens of SQL Server non-spatial database tables. These are common tables, the column types are: nvarchar, int and float. I try to use Arcpy to automate joining these database tables to shapefiles. The tables have to be registered in ArcGIS first. The ArcMap I use is 10.3.1...

I have a pretty simple problem: SELECT * FROM ST_Distance(ST_GeographyFromText('POLYGON((70 -40,70 -39,71 -39,71 -40,70 -40))'), ST_GeographyFromText('POINT(70.48 -39)'), False)returns 118.45656881Shouldn't it be 0? Isn't the point on the edge of the polygon?Why does SELECT * FROM...

I'm trying to label two areas of my map in CartoDB. The base map labels two of them already but there are two other regions that need to be labeled. Every time I put a text box over one of the regions, and then move around on the map, the text box moves too. أكثر...

I am looking for an administrative boundary file (preferably in ESRI shapefile format) for the divisions of Monaco namely: CondamineFontvieilleJardin ExotiqueLa RousseLarvottoLes MoneghettiMonaco-VilleMonte-CarloI have looked at a few websites like diva-gis, nationmaster, geofabrik, statsilk...

I'm using gdalwarp to convert MODIS NDVI mosaics from Sinusoidal to epsg:4326. To save space I'm using VRT files until I reach the final product. Here is my workflow. Mosaic NDVI Modis tiles using pyModis and output as VRT. NoData value (-3000) is kept gdalwarp the VRT mosaic to epsg:4326...

I am working in ArgGIS 10.1 with a field (raster layer in tif format) in which I have placed two points (.shp layer). I have two versions of both layers, resulting four layers: one tif+shp set in CRS WGS84 Web Mercator and the other tif+shp set in CRS WGS84 UTM zone 15N. If I establish the...

I'd like to determine whether a given U.S. street address is publicly accessible to vehicle/foot traffic. This would include addresses on both publicly and privately maintained roads that are not within a gated community or another access-restricted area. For instance, 8541 Lake Windham Ave...

I've got a boundary file that I would like to resample the raster file from a 30m grid to a 10m grid inside the boundary file. When I try and do it in Qgis or Grass all I get is one big raster cube that doesn't have any data in it. أكثر...

I have some polyline feature objects in python. Now I want to get all the points of polylines. For example, if a polyline has start point [0,0] end point [5,5]. Result: [1,1];[2,2];[3,3];[4,4];[5,5]. I want to find all the integer points on that line including end points. For straight line...

I'm quite a ways outside my box on this one, but I would ceratinly appreciate any perspectives on this issue. I have some control points from NGS that are in NAD83 (NSRS 2007) that I would like to merge with the rest of our control point dataset, but our existing data are in NAD83(CORS 96) ...

طرق دراسة الكثبان الرملية الهابطة ا.د/صابر أمين دسوقى أستاذ الجيومورفولوجيا - كلية الآداب - جامعة بنها د/ محمود أحمد حجاب أستاذ الجيومورفولوجيا المساعد - كلية الآداب- جامعةسوهاج. حمل الآن طرق دراسة الكثبان الرملية الهابطةpdf بعد الضغط على زر التحميل اتبع الخطوات التالية: مستجدات...

A small tutorial on the capabilities of LiDAR processing with LAStools at the example of a project in the Canary Islands, Spain, in Spring of 2012. We used LAStools to create canopy height maps, forest density grids, and showed that the LiDAR that was already owned by the municipal government of...

This video shwos how to use the*QGIS Print Compser. أكثر...

Many winter maintenance professionals are getting rid of their antiquated former "solutions" and turning to GIS technology to increase snow-fighting efficiency and operations. أكثر...

Joseph Kerski is the ultimate GIS/Geography enthusiast and a very vocal and passionate evangelist. أكثر...

The team at Lidar News is very proud to announce the availability of our User Forum. At the same time that we recognize the opportunity this presents for our readers we also realize the challenge of... Click Title to Continue Reading... أكثر...

I'm not alone in looking at the use of maps in fantasy literature; Hunter College classics professor Adele Haft, on the other hand, has been studying something a bit more singular: the use of maps in modern poetry. According to <a...

Hi Everyone, Just a quick note to let you guys know about an exciting and growing repository of Esri specific scripts and samples on GitHub. *The Esri Developer Support git is designed to provide: [p]roof of concept developer code and samples to help be successful with all ArcGIS developer...