These commands plot points on a map in my code using python, matplotlib, and
basemap. Thanks to Ian and Glenn for their assistance. Turns out lat, lon
needed to be transformed into Lambert's coordinate space upon which the rest of
the map is based. If anyone knows of a more elegant way to wor
Hi,
On Tue, 19 Apr 2011 13:09:23 -0700 (PDT)
Michael Rawlins
wrote:
> I'm reading
> the latitudes and longitudes from a file, with each lat, lon pair on
> each record (line).
I use loadtxt for this purpose.
http://www.scipy.org/Cookbook/InputOutput
http://www.neuralwiki.org/index.php?title=Lo
ted in the plot command and
paste them into the source code. Not ideal but will get the job done.
Mike
--- On Tue, 4/19/11, G Jones wrote:
From: G Jones
Subject: Re: [Matplotlib-users] plotting points/locations from data file
To: "Michael Rawlins"
Cc: "Ian Bell" , Matplotl
(lats,lons,'*')
>
> #plt.plot(lons,lats,'*')
>
> #data = csv2rec('file2.txt',delimiter=',')
>
> #plot(data[:,0],data[:,1],'o')
>
> #data = csv2rec('file2.txt',delimiter=' ',names=['lat','lo
On second thought, the code requires basemap package too.
Mike
--- On Tue, 4/19/11, Michael Rawlins wrote:
From: Michael Rawlins
Subject: Re: [Matplotlib-users] plotting points/locations from data file
To: "G Jones"
Cc: Matplotlib-users@lists.sourceforge.net
Date: Tuesday, Apri
,43.0)
text(xpt,ypt,'*')
# draw coastlines and political boundaries.
m.drawcoastlines()
m.drawcountries()
m.drawstates()
# draw parallels and meridians.
# label on left, right and bottom of map.
m.drawparallels(parallels,labels=[1,0,0,0])
m.drawmeridians(meridians,labels=[1,1,0,1])
f file to use csv2rec?
>
>
> import sys,getopt
>
> from mpl_toolkits.basemap import Basemap, shiftgrid, cm
> from mpl_toolkits.basemap import NetCDFFile
> from pylab import *
>
>
>
>
> --- On *Tue, 4/19/11, Ian Bell * wrote:
>
>
> From: Ian Bell
> Subj
i]. I corrected
that and changed my longitudes to not have the '-' sign and the code ran
without error. Could the '-' be causing a problem? I need to input the lat,
lon as in the file as shown above.
Mike
--- On Tue, 4/19/11, Ian Bell wrote:
From: Ian Bell
t,'*')
I will strip the code down to bare minimum (take out reading of netCDF data
file) and paste it here along with ten example lats,lons.
--- On Tue, 4/19/11, Ian Bell wrote:
From: Ian Bell
Subject: Re: [Matplotlib-users] plotting points/locations from data file
To: "Michael
have the '-' sign and the
>> code ran without error. Could the '-' be causing a problem? I need to input
>> the lat, lon as in the file as shown above.
>>
>> Mike
>>
>>
>> --- On *Tue, 4/19/11, Ian Bell * wrote:
>>
>>
>>
;-' be causing a problem? I need to input
> the lat, lon as in the file as shown above.
>
> Mike
>
>
> --- On *Tue, 4/19/11, Ian Bell * wrote:
>
>
> From: Ian Bell
> Subject: Re: [Matplotlib-users] plotting points/locations from data file
> To: "Michael Raw
to not have the '-' sign and the
> code ran without error. Could the '-' be causing a problem? I need to input
> the lat, lon as in the file as shown above.
>
> Mike
>
>
> --- On *Tue, 4/19/11, Ian Bell * wrote:
>
>
> From: Ian Bell
>
ted.
Traceback (most recent call last):
File "test.py", line 319, in
(lat,lon)=line.strip().split(' ')
ValueError: too many values to unpack
There are 203 records in the data file. Line 319 of test.py is this:
(lat,lon)=line.strip().split(' ')
---
test.py", line 319, in
>
> (lat,lon)=line.strip().split(' ')
> ValueError: too many values to unpack
>
>
> There are 203 records in the data file. Line 319 of test.py is this:
>
>
> (lat,lon)=line.strip().split(' ')
>
>
> --- On *Tu
ue, 4/19/11, Ian Bell wrote:
From: Ian Bell
Subject: Re: [Matplotlib-users] plotting points/locations from data file
To: "Michael Rawlins"
Cc: Matplotlib-users@lists.sourceforge.net
Date: Tuesday, April 19, 2011, 6:52 PM
To clarify, you are trying to read in a set of (lat,lon) points in a
To clarify, you are trying to read in a set of (lat,lon) points in a file
that is space delimited, store the data, and then put a text marker at each
point, with each point numbered in order? The critical part is that you
want to use a list (or numpy array) instead of a dictionary. Something like
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