James, FYI "I wish I could find a method to use multiple colours at the interection of the semi-transparent markers. I may try some sort of overlayed coloured polygons, if I can figure out how to calculate the concentrations in some quick and meaningful way. I need to change variables and redisplay the data fairly quickly so I need to avoid a lot of math crunching. "
try this - it's quick at math crunching. http://www.heatmapapi.com/ Mapperz http://mapperz.blogspot.com On Jan 19, 10:30 pm, jameslove <[email protected]> wrote: > Hi All, > I am using semi-transparent markers to approximate a heatmap which is > also clickable. I have a 25x25 pixel marker which I'd like to expand > upon zooming down each level. I can do a hit and miss to find out what > the proportional difference would be with each zoom level, but I > wondered whether anyone has done this before? > > Basically I want the roughly same area of land coverage for my 25x25 > circle when I zoom down. I'll likely have it restricted to from a > state to city level of zoom so I don't need to worry about really > close zooms. I haven't tried it yet, but I likely will start with a > 100x100 sized marker which is compressed at the state level and then > passed through its defined size to be expanded at the lowest level. > This will hopefully avoid my circle turning into too much of a > squarish shaped blob if people know what I mean. > > Any thoughts or link directions on this would be appreciated. I'll > share what I call my "Rough clickable heat map method" once its become > a little less clunky. > > I wish I could find a method to use multiple colours at the > interection of the semi-transparent markers. I may try some sort of > overlayed coloured polygons, if I can figure out how to calculate the > concentrations in some quick and meaningful way. I need to change > variables and redisplay the data fairly quickly so I need to avoid a > lot of math crunching. > > Thanks, > James Love > UBC - Okanagan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
