Topic: Colour-code distribution map dots by date class?
I want to be able to differentially colour the dots on a distribution map according to defined data classes. is this currently possible with Indicia?
Alan
Aberystwyth
The technical forum of the NBN Trust for use by the Network. It includes discussions and announcements on the NBN Atlas, Recorder 6 and Indicia |
You are not logged in. Please login or register.
Forum → Indicia Development → Colour-code distribution map dots by date class?
I want to be able to differentially colour the dots on a distribution map according to defined data classes. is this currently possible with Indicia?
Alan
Hi Alan
You can see something like that on the black squirrel website.
This uses the Reporting>Distribution Map 3 prebuilt form.
For something more up to date see the Quick Species Map documentation which I found by Googling "readthedocs indicia geoserver"
In general, GeoServer can provide any number of layers, extracting any data from the database we want, and you can overlay as many layers as you like. I haven't entirely mastered it myself yet.
Jim
Great! Thanks Jim.
Alan
Hi Alan
I've been working on some Indicia stuff with openlayers that lets features be styled dependant on the underlying attributes in the Indicia warehouse.
The NE Scotland Mammal Atlas page
http://surveys.ereca.org.uk/nesbrec/mammalatlas.aspx
is based on Indicia, where each square is a location stored in Indicia and openlayers is used to display the features. Obviously the records are in Indicia as well so I can produce summaries of the squares (the green ones).
The downside (not sure that it is...?) is that the browser really needs SVG graphics, which rules out IE8 and previous versions. Most modern browsers work fine though
Ta
Iain
That's nice Iain, I like it.
Another way to do this is via the report_helper::report_map. This loads the output of a report onto a map (as long as it has a mappable column). The report can contain columns which define the styling of the features - see the library/occurrences/explore* reports for examples.
This approach is simple as it does not require SLD + GeoServer, but may be slower than GeoServer if you have a lot of records.
Cheers
John
Forum → Indicia Development → Colour-code distribution map dots by date class?
Powered by PunBB 1.4.6, supported by Informer Technologies, Inc.