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Basic cgMap and cgMapPlotS tutorial [message #81402]

Mon, 17 September 2012 10:26

Brian Daniel
Messages: 80
Registered: July 2009

Member

I've never worked much with maps in IDL, so now that I need to, I thought I'd start with the Coyote tools. From the documentation, the cgMapPlotS object seems like exactly what I need, which is to plot specific lat/lons onto a map with continents or other shapefiles on top.

Here's my code:

center_lat = 36.099510
center_lon = -5.3362050
latXRange = [35.905270, 36.171590]
lonYRange = [-5.6205900, -5.0512100]

; Create cgMap object
oMap = Obj_New('cgMap', 'UTM', /LatLon_Ranges, $
Center_Latitude=center_lat,Center_Longitude=center_lon,$
XRange=latXRange,YRange=lonYRange, /Window,$
Position=[0.05,0.95,0.05,0.95],Title='cgMap Test',Land_Color='brown')

print, latXRange, lonYRange

The above code prints:
4669305.1 4713144.8
-801136.78 -722963.25

So latRange and lonRange's values were changed, I'm assuming to be in units of meters. center_lat/lon values are unchanged. Then, I attempt to create a cgMapPlotS object to plot the center_lat and center_lon position with a symbol:

oMapPlotS = Obj_New('cgMapPlotS', oMap, color='red', Lats=center_lat, Lons=center_lon, PSym=1 )

I get the following error:

CGMAPPLOTS::INIT--> CGCONTAINER::INIT: Incorrect number of arguments.

The only argument asked of cgMapPlotS is that of a cgMap object, which I provided. What am I missing?

Thanks in advance!
-Brian

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[Message index]

		Basic cgMap and cgMapPlotS tutorial By: Brian Daniel on Mon, 17 September 2012 10:26
		Re: Basic cgMap and cgMapPlotS tutorial By: Brian Daniel on Wed, 19 September 2012 12:36
		Re: Basic cgMap and cgMapPlotS tutorial By: David Fanning on Mon, 17 September 2012 14:33

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