I want to add a 2nd axes at the top right corner of a 1st axes. After googling, I found two ways to do things like this: fig.add_axes(), and mpl_toolkits.axes_grid.inset_locator.inset_axes. But the...

In case somebody doesn't know: A cartogram is a type of map where some country/region-dependent numeric property scales the respective regions so that that property's density is (close to) constant...

I am looking for (the name of) a geometric algorithm for cartographic generalization of a street map. In my map data, I have many paths (ordered list of points, connected by line segments) that la...

I'd like to toggle between layers in Mapbox GL JS. I've created some radio buttons that partly work in that you can switch from one layer to the other but not back or forth. Below is my code for t...

How to apply force repulsion on map's labels so they find their right places automatically ? Bostock' "Let's Make a Map" Mike Bostock's Let's Make a Map (screenshot below). By default, labels ...

I know R has various ways to plot maps properly with projections. But just for a quick 'good enough' result using base functions, is there a function to calculate the aspect ratio for a particular ...

I'd like to show admin labels for only one country on a map of Latin America. I'm new to CartoCSS and can't figure it out. I tried inspecting the labels and couldn't discern any hierarchy in the OS...

I'm monitoring a GPS unit which is on it's way from Cape Discovery in Canada, to the North Pole. I need to keep track of the distance travelled and distance remaining each day, so I'm using the Hav...

Given an elevation map consisting of lat/lon/elevation pairs, what is the fastest way to find all points above a given elevation level (or better yet, just the the 2D concave hull)? I'm working on...

I am trying to figure out how to plot WGS84 latitude/longitude points on a bitmap but cannot figure out the math required to turn lat/lon points into coordinates that would be plottable. Could anyo...

I'm working on a map of the native languages of California for Wikipedia. The map contains areas that each correspond to a language. The original looks like this (click it to see the SVG): I want ...