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Maps4HTML / HTML-Map-Element-UseCases-Requirements

Use cases and requirements for Maps on the Web
https://maps4html.org/HTML-Map-Element-UseCases-Requirements/
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Capability: Show pinpoint locations or custom markers on the map #140

Open Malvoz opened 4 years ago

Malvoz commented 4 years ago

This issue is for discussion of the map viewer capability “Show pinpoint locations or custom markers on the map”.

prushforth commented 4 years ago

I believe this is a required capability. Most Web map frameworks allow you to use GeoJSON (at least) to create custom markers. I think we need to reduce the number of abstractions that are used to implement the functionality, however. By this I mean, for example in Leaflet, you have an object called a "Marker", which represents point locations using icon files. You can provide custom icons etc., however I believe that the "Marker" abstraction is one too many.

We need to support CSS / SVG styling of Simple Features geometries, if I might get to the point, but I guess that argument will be for another issue.

Anyway, instead of being undecided on whether this is a required capability, I think it should be marked as a green requirement.

AmeliaBR commented 4 years ago

I hadn't really been making any decisions about requirement status yet (other than in the initial sections I drafted as examples). But I agree, displaying marker points on a map is a basic requirement.

That said, we might want to separate out the "custom icon" bit into a separate capability. @nchan0154, did you consider that part when doing your capability review for this section?

nchan0154 commented 4 years ago

@AmeliaBR I hadn't mentioned the custom icon part in my write up but I did take notes on whether or not custom icons were supported when conducting research, so breaking this out into a separate capability should be relatively quick and painless!