cartogram | A QGIS plugin for creating cartograms

I am new to Spatial data & cartogram lib and getting some issues while trying to recreate plot from: https://www.r-graph-gallery.com/a-smooth-transition-between-chloropleth-and-cartogram.html

Lib & Data

I have a shapefile of population estimates of different administrative levels on Nigeria and I want to create a cartogram out of it.

I used the cartogram package and tried the following

I am trying to convert a geojson of London local authorities into a hex cartogram where each hexagon represents one local authority. It works in R but when I try to export the generated hexgrid as geojson or topojson I get the following error:

Trying to build a simple dashboard with heatmap (build as a cartogram) and rowchart. Selecting region, i expect to see changes on rowchart and vice versa. But it doesn't work in this way.

This is a snippet from https://observablehq.com/@d3/non-contiguous-cartogram , which controls the transformation of the shape of states.

I have a function that creates a cartogram of fish catch per country per year and puts that cartogram into a list of cartograms, depending on which year I feed it:

Not sure what it going on - this was all working fine until one plot threw this at me. I managed to create this (seemingly) out of the blue.

My code can be found here: https://github.com/popovs/400m-cartograms

Result:

I am trying to use UI.NCurses

https://john-millikin.com/software/haskell-ncurses/reference/haskell-ncurses/latest/

for some simple path finding lessons The issue is I have a random Int which of course returns an IO Int which then means I have an IO TerrianType which then leads to an array of IO TerrianType

the issue is I need to resolve these in main so they can be printed to the screen using drawString. I am including the code below:

I am trying to update d3-cartogram to work with D3.js version 4. So far, everything is going fine — I've just been updating all the functions so that they're written in the flattened namespace of version 4. For example, instead of d3.geo.path(), it's d3.geoPath(). I've also changed a few small things so that the code works with the latest version of TopoJSON. For example, instead of topojson.object(topology, geom).coordinates, it's topojson.feature(topology, geom).geometry.coordinates.

But I've encountered a problem I can't seem to solve. The file cartogram.js has a line that reads var areas = objects.map(path.area), where objects is a collection of TopoJSON Features. path.area is different in D3.js versions 2 and 4, and I can't seem to reconcile them. If I console log it in each version, it looks like so:

• Version 2: function (n){return n&&e.hasOwnProperty(n.type)?e[n.type](n):t}
• Version 4: function (t){return U_(t,r(Ag)),Ag.result()}

In version 4, it logs the error: Uncaught TypeError: r is not a function. Naturally, I've already Googled the error along with various descriptions of what I'm trying to do, but I haven't had any luck. Thanks in advance for any help.