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Practical Handbook of Remote Sensing Book Description Publication Date: November 10, 2015 A Beginner’s Guide to the World of Satellite Data Over a thousand active satellites are in orbit around the Earth with applications including navigation, the transmission of data and satellite remote...

World’s first smart drone Solo makes its debut in Jakarta أكثر...

I'm trying to create a vector grid layer with cells 150m x 150m, yet it only seems to be possible in degrees. Is there a setting I need to change, or is there an equivalence I can use to convert degrees to meters? أكثر...

I Did M.Tech Remote Sensing and GIS . I have learnt C# and ARC Objects.Please guide me how to step in to Developing field as a beginner. As every body asking Programming experience . I have only Domain experience of 1.5 years. Please give me advice. أكثر...

I am looking for some basic concepts about DEM elevation data. Can vector contour polylines be used to create hill shading? Or, do I need specific Digital Elevation Data (DEM)? Can DEM data be either vector or raster? I have a map with contour lines. I also have DEM data in a .gdb file with...

I have a table with small polygons that are scattered around a "continental" area (Brazil). How can I convert 1m to decimal degrees of a wgs84 reference system (longitude / latitude) depending on the position of each polygon? Broader context: I am trying to use ST_SimplifyVW(geom, tolerance)...

The next time you are flying over a desert, look for yardangs. أكثر...

How to change the expression in order to define the number of decimals? layer.dataProvider().addAttributes([QgsField("fieldname", QVariant.Double)])As I read in QGIS API Documentation: Parameters name Field name type Field variant type, currently supported: String / Int / Double...

Is it possible to 'fly to location' in Leaflet in the same way as this Mapbox GL example? أكثر...

What is the most suitable map projection for Santa to plan his delivery route from the North Pole? He needs to preserve distance as much as possible. The reindeers need to preserve energy. The Elfs prefer FOSS solutions أكثر...

Watch how senseFly successfully demonstrated the 3D mapping capabilities of its eBee professional mapping drone (https://www.sensefly.com/drones/ebee….) under extreme alpine conditions. This mapping mission took place in the mountains above Zermatt at altitudes of up to 3,000 meters, with the...

I am working on a project doing spatial analysis at a statewide level. I am looking at a form of transportation coverage in a state, and part of my analysis involves buffers and drive time polygons. I am using a geodatabase (therefore ArcGIS) for all my work, so new features will be exported as...

How to generate a distance matrix using two point files, to calculate the distance in meters of the nearest 5 points in one file, for each record in the other file. After, generating the matrix table, we show how to join the resulting one-to-many matrix back to the original point layer to find a...

I hope everyone gets to enjoy the holidays with their friends and family. Merry Christmas to those who celebrate it and happy holidays to everyone. I got one of the best presents from Santa today.... Click Title to Continue Reading... أكثر...

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So I'm attempting to iterate through several shape files within a folder and only move some of them to a new folder. I'm doing this based on contents of the DBF file where I'm using dbfread to determine whether is should be moved or not. I have this all working as expected except it's only...

I am creating and validating topology through vb.net and arcobject code.Things are running fine as I am able to add rule and validate it . Problem is when once the program is run and topology is created.Second time when i am running my code , I have written that if topology exist then delete it...

I have used spatial interpolation to generate a raster that estimates percentage of a variable of interest (e.g. expected percentage at unsampled locations given frequencies at nearby sites). As I am ultimately interested in identifying regions where this percentage is high, I have reclassified...

I get some data with number of specimens with a request to interpolate it using kriging method. After some investigation it appeared that kriging results (performed in ArcGIS Geostatistical Analyst with default parameters) are not satisfactory. Interpolated values are far different from...