| Re: Basic cgMap and cgMapPlotS tutorial [message #81479 is a reply to message #81402] |
Wed, 19 September 2012 12:36   |
Brian Daniel
Messages: 80
Registered: July 2009
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On Monday, September 17, 2012 1:26:32 PM UTC-4, Brian J. Daniel wrote:
> 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.
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> Here's my code:
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> center_lat = 36.099510
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> center_lon = -5.3362050
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> latXRange = [35.905270, 36.171590]
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> lonYRange = [-5.6205900, -5.0512100]
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> ; Create cgMap object
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> oMap = Obj_New('cgMap', 'UTM', /LatLon_Ranges, $
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> Center_Latitude=center_lat,Center_Longitude=center_lon,$
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> XRange=latXRange,YRange=lonYRange, /Window,$
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> Position=[0.05,0.95,0.05,0.95],Title='cgMap Test',Land_Color='brown')
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> print, latXRange, lonYRange
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> The above code prints:
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> 4669305.1 4713144.8
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> -801136.78 -722963.25
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> 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:
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> oMapPlotS = Obj_New('cgMapPlotS', oMap, color='red', Lats=center_lat, Lons=center_lon, PSym=1 )
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> I get the following error:
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> CGMAPPLOTS::INIT--> CGCONTAINER::INIT: Incorrect number of arguments.
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> The only argument asked of cgMapPlotS is that of a cgMap object, which I provided. What am I missing?
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> Thanks in advance!
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> -Brian
Whew! I thought I was going crazy. Thanks for the update.
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