Guillem Segura

"In Spain, according to data backed by United Nations and Amnesty International, there are 114,226 people disappeared during the Civil War (1936-1939) and the Franco regime (1939-1975), buried in mass graves. This figure makes Spain the European country with most disappearances and the second in the World, only behind Cambodia." -

This visualisation shows the accumulation of mass graves in the Spanish peninsula. Information on the publication of the data can be found in

and

the government website of historical memory

. A similar map was published by

eldiario.es

.

The dataset contains the location and the approximate number of people buried. The data is extracted and processed using

and initially visualised using

Mapbox

. After the initial analysis, a neater map is created using

D3.js

.

The interactive map doesn't represent the accurate position of the graves as some have the same location parameters and would be overlapping. Instead, it tries to show the accumulation by positioning the groups as close to the original spot as possible. It also makes use of tooltips to show the number of people buried in each group of mass graves.

The original map shows every location.

As the aim of this project was to make the accumulation of single mass graves clearer, in this second map, we use the force-directed graph layout to show all the graves.

However, some of the points are now shown over the sea. To correct the previous map, we can bind the points to the perimeter of the peninsula - the points are pushed towards the land. Plus, tooltip annotations were added to each of the groups