Re: [Matplotlib-users] Plotting NOAA data...

[Jeff W. <js...@fa...>]

Mauro Cavalcanti wrote:
> Dear Anton,
>
> 2008/12/23 antonv <vas...@ya...>:
>   
>>  Also, because I figured out the data I need and already have the scripts in place
>> to extract the CSV files I would really like to keep it that way. Would it be possible to
>> just show me how to get from the csv file to the plot?
>>     
>
> Here is a short recipe:
>
> import numpy as np
>
> f = open("file.csv", "r")
> coords = np.loadtxt(f, delimiter=",", skiprows=1)
> lon = coords[:,0]
> lat = coords[:,1]
> dat = coords[:,2]
>
> where "file.csv" is a regular comma-separated values file in the format:
>
> Lat,Lon,Dat
> -61.05,10.4,20
> -79.43,9.15,50
> -70.66,9.53,10
> -63.11,7.91,40
> ...
>
> Hope this helps!
>
> Best regards,
>
>   
Since the arrays are 2D (for gridded data), a reshape is also needed, i.e.

lon.shape = (nlats,nlons)
lat.shape = (nlats,nlons)
data.shape = (nlats,nlons)

You'll  need to know what the grid dimensons (nlats,nlons) are.

-Jeff