Re: [Cdat-discussion] aspect ratio

[Charles س. D. <dou...@ll...>]

Hi Hugo,

Simply do:

import cdms2, cdutil, os, sys, vcs, vcsaddons 
filepath = os.path.join(sys.prefix, 'sample_data/clt.nc') 
cdmsfile = cdms2.open( filepath )
data = cdmsfile('clt', longitude=(-110, -70), latitude = (6, 20)) 
v = vcs.init()
v.portrait()
v.plot( data, continents=4, ratio='autot' )
v.gif('centroamerica.gif')
raw_input()

This will give you the best result

If you really care about the 1to1 ratio do

import cdms2, cdutil, os, sys, vcs, vcsaddons 
filepath = os.path.join(sys.prefix, 'sample_data/clt.nc') 
cdmsfile = cdms2.open( filepath )
data = cdmsfile('clt', longitude=(-110, -70), latitude = (6, 20)) 
v = vcs.init()
v.portrait()
v.plot( data, continents=4, ratio='1t' )
v.gif('centroamerica.gif')
raw_input()


On Mar 9, 2010, at 11:04 AM, Hugo Hidalgo wrote:

> Hello, 
> 
> I am new to cdat and I would like to produce a map for the Central American region. I noticed that I can define my region using the cdmsfile command.  However, the figure is always stretched in the same area of the screen (being landscape or portrait).  If I want to keep a constant 1:1 aspect ratio, is it possible to define this so that the continents in the graph are never deformed? 
> 
> Also, I would like to increase the resolution of the coast, since the data that is available is too coarse when I display my region.  What is the format of this coast data and how do I enter it into cdat.
> 
> I appreciate very much any help you can provide me.
> 
> Best regards, Hugo Hidalgo.
> 
> PS
> Here's a copy of my code
> 
> #!/opt/cdat/bin/python
> import cdms2, cdutil, os, sys, vcs, vcsaddons 
> filepath = os.path.join(sys.prefix, 'sample_data/clt.nc') 
> cdmsfile = cdms2.open( filepath )
> data = cdmsfile('clt', longitude=(-110, -70), latitude = (6, 20)) 
> v = vcs.init()
> v.plot( data, continents=4 )
> v.portrait()
> v.gif('centroamerica.gif')
> raw_input()
> 
> 
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