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Mobile GIS professionals depend on field hardware that is accurate, rugged and efficient. After the popular Nomad 900G series, Trimble is announcing its new Nomad 1050 series of handheld tools. This next-gen hardware is ultra-rugged and filled*with GPS features for faster processing power, more...

Bonjour, J'ai un raster au format ascii binaire (extension .asc, quand je l'ouvre dans notepad++, c'est illisble). Je l'importe dans GRASS, je fait des opérations dessus, je l'exporte au format AAIGrid, mais là, il est au format ascii 'normal' (je peux l'ouvrir dans notepad++). Du coup, mon...

السلام عليكم ورحمة الله وبركاته صورة: http://www.arabgeographers.net/up/uploads/14417763141.jpg (http://www.arabgeographers.net/up/) نرجو... أكثر...

I have a large Raster with High resolution DEM of a large area, and I need to split it into smaller squares of 500mx500m, so that I can run other raster functions on it. Basically I'm looking for the GDAL version of what I had asked here: Is there a Raster Equivalent of the Split tool? How Do...

I have a question regarding a parameter used in ionospheric modelling - ionospheric pierce point (IPP) and its projection on ground, subionospheric point (SIP). For ground-based GPS stations, I understand there is the Klobuchar's equation that could be used to compute the SIP based on...

I am new to remote sensing, so I would want to clarify my understanding of the meaning of Multi Temporal Images. As far as I understand, multi temporal images are multiple images of the same scene acquired at different times. Is there more to their defintion, or are multitemporal images just...

I have the DEM of a State in ERDAS Imagine (.img) format. I have a shapefile containing the counties of that state. I want to split the whole raster into DEMs of the individual counties. The counties are irregular polygons. So this isn't as easy as splitting the Raster into tiles. How do I...

Say hello to Jothirnadh! Jothi joins us to improve OpenStreetMap and other datasets using a combination of satellite imagery, customer feedback and probe data. Prior to joining Mapbox, Jothi was using OpenStreetMap tools to study the quality of urban expansion with the Urban Expansion...

I am trying to make a program that will b able to fetch the street intersection coordinates in a given radius. I have OSM map on android. But Now I am in the blur and cant see what to do! I have a dobts that reverse Geocoding won't work Here, will it? Has Anyone tried that before? I appreciate...

creating new point with different coordinates not changing the position. First point The bellow code create a point on the map VectorLayer pushPinLayer = new VectorLayer("PushPins"); position1 = new Coordinate(10, 10); geos.Add(gf.CreatePoint(position1)); Second...

I have two maps that originally come from a harvester and a tractor as shapefiles: Corn Yield and Planting Speed. I would like to know what would be the best procedures to statistically answer the two questions below: Is there a correlation between the Corn Yield and the Speed Planting...

Is there a difference between the Planchon & Darboux and Wang and Liu depression fill Can anyone tell me, based on actual analytical experience, if there is a difference between these two depression filling algorithms, other than the speed at which they process and fill depressions (sinks) in...

hi im new and im using QGIS 2.6.1 brighton and i have a problem in computing the area of each layer..i was actually working on the map of our municipality and i would like to compute the total area of the residential places etc..the problem is it actually just give me 0 wen i compute the...

I have a buffered line route that is overlayed on a DEM: I've clipped the DEM to the buffered line, and exported it as an ADF ESRI grid file. I then used gdal_translate to convert it from the Arc/Info ASCII Grid to the ASCII Gridded XYZ. This all works fine, but the output XYZ has tens of...

I'm trying to perform a union on a common field after merging two adjacent shapefiles. The shapefiles end up with at least one thin sliver of space between them. When I attempt a union I get the following orphaned hole error: Error in createPolygonsComment(p) : rgeos_PolyCreateComment...

I have two files (global temperature and precipitation), both in a 360x720 grid array (latxlong) in a csv file. I'm trying to add this to ArcMap 10.1 so I can use it in raster format. I've added the files to tables in ArcMap and then tried to display xy data, but because it is in grid format...

I have two binary rasters, raster1 and raster2, which represent the distribution of grassland habitats inside an area in two different moments in time (raster1 = older, raster2 = recent). In both rasters, grassland areas have the value 255, while everything else has the No data value of 0. The...

I have a table: , Script at ModelBuilder's "calculate values": Expression: a("%path%")Code BLOCK: def a(path): fields = arcpy.ListFields(path,"FID_*") for field in fields: return field.nameGives me only ONE field name! أكثر...

Just curious if there are other communities out there like this, or if there are other sites people would recommend? أكثر...

A new ArcGIS for Maritime: Charting seminar is now available Esri’s Virtual Campus training site!* This one hour training video demonstrates new capabilities available at ArcGIS 10.3.1.* Check out the new easy to use workflows for: Loading in your portfolio of Electronic Navigational Charts...