excuse me, has anyone ever drawn a color speckle map of meteorological elements on openlayers3? For example, the elements of temperature and precipitation need to interpolate the temperature or precipitation data of a certain area (for example, IDW interpolation), and then draw a color speckle map or isoline map according to the interpolation results.
has just been finished recently, but it is drawn in other languages outside, saved as png, with transparent background and superimposed on openlayers to display this static image
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use openlayers3 to load big maps, and each reload will cause the browser to allocate new memory, even if the existing maps have been released in the program and the original dom has been deleted. ...
use openlayers3 for map positioning, now the range of map positioning is 1km, how to calculate the pixel distance of 1km at the current level on the map? Or how to get the current level scale. Ol rookie, ask the gods for help ...
for example, now that there is a feature that is red, how can I change its style? I use feature.getStyle (). GetImage (). GetFill (). SetColor ( "blue "); the color item of printing feature has turned blue, but it is still red. Why? how can I change t...
such as the question, how openlayers loads online Tencent Map as the base picture, I have searched a lot on the Internet, but I still feel very confused ....
Click to save after drawing point features, line features, and area features at the same time. The saved layer is a line feature layer. Do you want to save to different layers for different types of features? So if there is no point feature layer on the...
as mentioned in the question, how can openlayers tell if the point is online? I only found the judgment point whether it is in the noodle or not, but I didn t find it whether it was on the line ....
resolved the tiles on the right are obtained through the interface, but the map on the left becomes distorted after rendering here is my code. Has anyone ever encountered a similar problem? <!DOCTYPE html> <html> <head> ...
the old-fashioned require.js, used in current projects all bind events to openlayers. in order to avoid binding an event to generate a large number of global variables, now wants to bind events to each module. will this affect performance? (openlaye...
want to learn about the three frameworks combined with openlayers to make electronic maps. Friends with open source code hope to share and learn ....