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I'm trying to Georeference an image. I've followed the guide from QGIS, but for some reason, it's stretching, and offsetting the image from the points. For example, my input of the southwest corner is: 49.72962898.471569 And after I've run the georeferencer the southwest corner is...

Which tool can I use to get or keep the rest of the output feature when I use the Clip (Analysis) tool in ArcMap? For instance I need to calculate Blue minus Green. أكثر...

I have made a Geoform for folks to report incidences; however, it's useless unless someone is notified via e-mail that an incident has been reported on the map. Does anyone know how to link the submit button to an e-mail address in addition to it's regular function? I opened up the code but...

i understood hosting mbtiles possible and some solutions still available. I wonder and I can not find the answer; how can i create own vector tiles (mapbox vector tile format) which is data store in postgis or geojson etc. Should i download mbtiles from mapbox أكثر...

I have been given some ESRI personal geodatabase files (MDB) and file geodatabase files (GDB). I don't know the coordinate system(s) for these files. Is there a way to do this without using ESRI software? أكثر...

One major strenght of QGIS is its easy but comprehensive extensibility with Python plugins. This talk shows a selection of more than 25 plugins covering many areas of use. Included are Must-Haves like the well known Open Layer plugin, less known core plugins like offline editing and insider tips...

I am really new in OSM query language and i want to know how to found the relation id from the area id.here is the query that i made: is_in(45.5697, 3.1572);foreach(area._["boundary"~"(administrative|national_park)"];out ;>;out;); Thanks is advance. أكثر...

I have lat,long values that I need to convert to x,y in a custom Lambert Conformal Conic projection defined as +units=m +a=6371229 +b=6371229 +x_0=0 +y_0=0 +proj=lcc +lon_0=0 +lat_2=25.0 +lat_1=25.0 +lat_0=25.0. I'm trying to use Dotspatial.Projections library in C# to basically replicate a...

Bonjour, Le système d'exploitation de mon ordinateur personnel est Fedora 21 en 64 bits. J'ai QGIS 2.4 en 64 bits. Comme j'ai besoin des coordonnées en WGS84 MGRS, j'ai installé le plugin MGRS-Tools (https://github.com/boundlessgeo/mgrs-tools). Cela fonctionne sans problème. Au bureau j'ai...

I'm transforming some SRTM *hgt files (1 second resolution version) to GRD format using dal_translate. For example, one of my orders is: gdal_translate -of AAIGrid N43W001.hgt N43W001.grd The center of pixel coordinates for the lower left position in this file are lat=43 أكثر...

I am trying to apply stylesheet that I downloaded in qml format from GitHub of Ordnance Survey https://github.com/OrdnanceSurvey/OS-VectorMap-District-stylesheets/tree/master/GML%20stylesheets Master Map looks fine in the default styling but when I apply the style that I downloaded makes the...

I have a circle and a polygon that I'd like to move to the user's local position. I managed to move the circle latLng but I can't find a way to do the same thing with a polygon. Can someone help me please? أكثر...

Continuing its commitment to invest in the most advanced survey technology, Psomas has purchased the Lynx S1 Mobile Mapper System from Optech. Psomas is the first company in the United States to... Click Title to Continue Reading... أكثر...

Is there any windows desktop software available to convert Geojson to Excel/CSV? أكثر...

How I can use the leaflet popups events throught CartoDB. I have seen that some events are working like 'click', 'movestart',but 'popupclose' and 'popupopen' are not working. My goal is to do some tasks when the user closes the popup. Can be the problem that I am using svg in the infowindow? I...

Bonjour, Mon objectif est de réaliser, avec QGIS, un produit, comprenant des données vecteurs et ou rasters qui servira de fond de carte puis de faire faire de lui un "produit web" qui pourra être ouvert par d'autres utilisateurs avec des logiciels de géographie (QGIS bien évidemment m:ais...

I am building a small multispectral camera based on the Raspberry Pi Compute Module and two Raspberry Pi cameras. One of the cameras has a NIR filter, the other is a normal RGB camera. When using the Composite Bands tool in ArcMap, and mix the bands as to get a falso color image, I got a blue...

QP4 Media is a London based events services company run by experts from the events, digital marketing and social media industries. Our team has more than eighteen years’ combined experience in providing support services to the global events industry while our main expertise is based around event...

By Kacey Fitzpatrick ‘Twas the day before Christmas, and all through the Agency, Our researchers were working, so much discovery! Is there one place, where all this can be found? One science review, no looking around? Here’s my present to you, no need to unwrap. Right here on this blog, your...

Dose anyone knows if there is any toolbox or extension for calculate GWPCA (geographic weighted principal component analysis) in arcgis ? I know there is package for that in R but i dont know anything about R and i could not find any good tutorial for that. أكثر...