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Can you use Torque for country data - polygons instead of points? Make animated maps with polygon data instead of point data? I would like the color of countries to change over time as a particular variable gets smaller and larger. Thank you! أكثر...

I was following an email discussion late last week regarding the search for some online principles of cartographic design. Many exist in various books that those with a cartographic background are aware of but, of course, people prefer to want their information for free via their glass lens on...

I've heard some good things about Rails, but I don't know much about it yet. There are only a few questions about Rails on GIS.SE (and there's not even a Rails tag). Is it worthwhile to learn about Rails, from a GIS professional's perspective? (eg, what advantages does Rails give when...

Last week drone pilots, humanitarians from NGOs like the Red Cross and GlobalMedic, platform companies including DJI and Skycatch, and United Nations and aid agency representatives gathered at MIT for a meeting of the Humanitarian UAV Network (UAViators). I joined the experts meeting to share...

With each passing month, 2015 looks more and more like 1997. أكثر...

Watch a free online seminar on October 29 to see how to create smart forms in ArcGIS, equip mobile workers with them, and use the power of maps to make better decisions. أكثر...

Watch a free online seminar on October 22 to learn how to view and analyze video files and live feeds within the context of a map, extract relevant data, and easily share your results. أكثر...

Though rain has stopped falling, coastal communities in South Carolina are preparing for a second round of flooding as a pulse of water pushes toward the sea. أكثر...

I am developing a web application that brings in a number of tileLayers and geoJSON layers. For the tile layers I have been able to do similar to this JSFiddle in that the layers appear depening on their zIndex value regardless of which layer was called in last. I thought I would be able to do...

I'm trying to collect input on a revision to my town's mainstreet. Is it possible to create a map where a visitor can click a point, and answer a few questions about that point? IE is it a Challenge/Asset Describe Upload a Photo or video أكثر...

I have a csv file with almost 36000 rows.The format of csv file is x,y,Points in each polygon number, Elevation. I would like to arrange this csv file in the below mentioned format. Let’s say in this example, Polygon number 4, 5, 6 points are in the 3rd column. I would like to take x,y,z of the...

This course is the second in the “Geographic Information Systems Fundamentals” series, designed for beginners interested in learning more about GIS or students and professionals looking for a refresher. The course will continue with core concepts of GIS covered in the first course of the series...

i'm using geoserver,postgresql and here openlayer. i'm trying to retrieve two lat-lon point(for point A and point B) on clicking of map. This code is working only to retrieve one lat-lon. i want to use this for 4(two lat-lon) points in jsp file. that i will use to find shortest path between...

Esri Canada map shows which party won in each electoral district in each of the last Canadian elections. أكثر...

Esri UK data reveals 'debilitating stress' is affecting millions of Brits thanks to data overload. أكثر...

Esri UK study reveals that the Brits are experiencing a "data overload.". أكثر...

Mapbox arrives tomorrow in Minneapolis for the annual meeting of the North American Cartographic Information Society (NACIS)! We are there to meet and share tips with fellow cartographers, but we’ll also be giving a number of talks you should check out. On Wednesday at 10:30, Amy Lee will give...

Making an awesome looking map is a lot of work. If need to do a simple map very quickly there is a new tool which might help you. Pixel map generator by amCharts allows you to create a custom pixel map in couple of clicks. It offers several simple customisation options. You can select sizes and...

In the application I'm developing, a lot of points can end up having identical (x,y) coordinates. I'd like a way to spread them out so that a user can interact with them all, but the only things I've found for dispersal relate to the desktop version. Is there any iOS counterpart to the...

Thanks to help on this site I've already got the following code from where I can perform certain analyses. However, I'd now like to perform analyses on a certain variable (column z) within the point shapefile. To do this I need to establish 'marks' on column z (the 7th column). This column...