File talk:England and Wales population cartogram districts.svg

Population density and colours

As far as concerns the sizing of districts to convey relative population, this is a marvellous image, thank you.

As a general reader with no background in statistics, I don't understand the sentence: Colours by quints (1/5th) of number of districts classified by population density with division of extreme quints. Can that (and the associated legend) be rephrased in more basic English?

I assume people with normal colour vision are supposed to be able to distinguish the colour for 171-400 from the colour for 1,001-2,570. I can't, and overall the colours chosen are scarcely accessible to the chromatically challenged. Can a more helpful palette be found, please? I have added the Colour blind template to the file.--Frans Fowler (talk) 22:07, 3 September 2017 (UTC)

,,Can that (and the associated legend) be rephrased in more basic English?" Sure, but I need your help. I sorted districts by population density and divided into 5 nearly equal groups. Not quints but quintiles. Is this word basic enough? Every square group in the legend is 1 quintile. Is this understandable? Can it be more concise?

,,Can a more helpful palette be found, please?" Yes, you can upload your version as a separate file and put a link in the description. You need a short edition in Inkscape. Different colours with very similar brightness (this a problem here, I guess) are very appealing to me, so I won't change it. PawełS (talk) 17:05, 25 January 2019 (UTC)

Thank you, PawełS. I suggest:

• Changing the legend in the image itself to read: Districts classified by population density (people/km²)

Could you do this, please?

• No change (or whatever change you think is appropriate) to the English description on the file page

• Editing the caption in English Wikipedia articles by deleting the third “sentence” so it reads: Population by districts. Their size is approximately in proportion to their population according to 2011 Census data.

I could you do this.

• Editing the colours in the image so that darkness increases analogously with population density (a low population density has a lighter colour than higher population densities)

Could you do this, please?

Frans Fowler (talk) 23:52, 25 January 2019 (UTC)

Frans Fowler I'm going to change the legend for ,,Population density of districts (people/km²)", and write more about quintiles in the file description, what would take too much space in a caption. I can change colours, but I don't want, you can do this, and I don't like monochrome pictures and maps, because they are less intuitive. The most often people divide numbers into 3 or 5 (quintiles) classes (like 5 stars rating): very big, big, medium, small, very small. In monochrome one has to learn which colour means medium (median) value and there is no more neutral colour than white (grey), which can't be used in the middle of a monochrome scale. PawełS (talk) 16:31, 27 January 2019 (UTC)