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  Collecting high resolution spatial data for use in biological research used to require the purchase and use of a dedicated GPS receiver. However, almost all modern smart phones contain GPS receivers, and by downloading and installing a suitable app, you can turn your smart phone into a fully...

In the spirit of openness, I want to share with you today what it means to us, at Esri, to make ArcGIS an open platform. We are committed to ensuring that your data and systems are interoperable with other technologies. This is a challenge because our user organizations have different or unique...

Historic Hawaii had land divisions called ahupuaas. They extended “mauka to makai” — from the mountains to the sea. These roughly matched watersheds on land but extended out into the water also. Families and groups who relied on these ecosystems for their food and other resources took pains to...

I created a track (on a hike, using GPS Essentials), then exported it to kml. At about 10,000 ft above ground, I see it all, but as I zoom in, I see fewer and fewer points. I've tried graphics mode of both DirectX and OpenGL (on a windows 7 machine). In the track properties in Google Earth, I...

I am having an issue while creating a template. When I save my Print composer to a template for my peers to use, the orientation is not saved. I have changed the orientation from landscape to portrait, and then save the template and close it. when I reopen the template, the orientation...

When merging two polygons in ArcMap 10.3, it appears that the new polygon always inherits the attributes of the larger (by area) of the two input polygons, unless otherwise specified. Is this by design, or by coincidence? أكثر...

I am using ogr2ogr to load data from multiple GML files into PostGIS. As shown in the ogrinfo output below, each GML file has multiple layers. Had to open data source read-only.INFO: Open of `D:\Projects\osmaps\data\vectorMapDistrict_unzipped\HP40.gml' using driver `GML' successful.1...

I am doing correlograms (Moran's I) between 125 plots. Those plots are located in large patches in my study area (see figure). The entire study area is approximately 2000 x 2000 m. I know that the usual range for a correlogram is 1/2 the value of the length of the study area. But in my case...

These are the notes from lidar field work conducted by a research team on the Ross Ice Shelf in the Antarctic. It’s a well written discussion on some of the work being done to better understand... Click Title to Continue Reading... أكثر...

By Joseph Ziobro It’s pretty great when your job involves finding the cutting edge of innovation. Over the past few years, I’ve been looking into technologies that make it easier for livestock producers to manage manure, protect water quality, and create new sources of revenue. One area where...

I am having a bit of trouble using the getGetFeatureInfo function on the TileWMS source in OL3. It works, but it represents the X/Y-parameters as I/J in the generated URL...

With R I want to make an animated choropleth map with the rMaps package and a custom map. I tried to follow the example of Diego Valle described here and to use the custom map info for Datamaps. However, the map does not display. But, the legend with the proper fill key appears with the year...

Are there any information/publication about Google Maps 3D / Google Earth 3D Switzerland? Like which databases (resolution) and algorithm are used? I'm just fascinated by the details (two example attached). https://www.google.com/maps/@45.9981837,8.9611752,69a,20y,3.56h,83.4t/data=!3m1!1e3...

We have a site that is based on the configurable-map-viewer template. We have several GIS users that are in areas where they have to work offline. For this purpose, we are continuing to support an ArcReader application, but I really want to get rid of that. I am curious what others that...

I'm working on a python script for ArcGIS 10.2/10.3. What I want is to automatically fill in a field of a point layer based on the location of that point in relation to a polygon layer. Say I have a two layers: cities and regions in a database, and the cities layer has a field called...

This question was first ask on Cross Validated, but I think it might be better suited to Geographic Information Systems. First question here, so I apologize if it doesn't fit! I am doing correlograms (Moran's I) between 125 plots. Those plots are located in large patches in my study area (see...

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qgis2web is a plugin for QGIS which creates webmaps. This question is about its OpenLayers 3 export. It exports QGIS layers to geoJSON to pull into the OL3 map. It writes them in EPSG:3857 to match the default output projection. However, I am trying to implement support for multiple projections...

I have this method in my code and have a button that when clicked run this code. In the first click all of code runs without error. but in second run i rcieved this error on line:IFeatureCursor fcDistrict = flDistrict.Search(null, false); "Exception from HRESULT: 0x8005018B" Void function(){...

I need to find common elements in 2 different lenght vectors. For example, I have a vector A with 10 elements, and a vector B with 3 elements. I need get the position of which elements in A is equal to B. A=[1,2,45,3,10,5,11,13,6,7] B=[45,3,10] C would be [3,4,5] I have already tried...