Efficient way on Mapping Data

Hi! I would say color difference.

Hi Kevin,

Need to explain more about your requirement.

Thanks,

Arvind Patil

Not exactly sure what you are asking, but if you want to know which data visualisations to use then humans can perceive changes in length far easier than say area or slope, especially when values are similar.

With regards to colour, remember that a proportion of males are red/green colour blind so may not see a colour change in the same way you do.

I came across this site which has some useful examples of the pros and cons of different ways to visualise data.

Data Visualization – How to Pick the Right Chart Type?