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== 2 D Plots with Pylab == {{attachment:density.png}} {{{#!python from pylab import * # The seawater module is installed only for Python2.6.2: # module load Python/2.6.2 import seawater S=linspace(0,35) T=linspace(-2,35.0) rho=zeros((S.size,T.size)) for i,t in enumerate(T): rho[i,:]=seawater.dens(S,t) figure() CS = contour(S,T,rho,15,colors='k') clabel(CS, fontsize=8, inline=1) ylabel('Temperature [$^\circ$C]') xlabel('Salinity') title('Sea water density [kg/m$^3$]') show() savefig('density.png',dpi=75) }}} |
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== Grads == http://opengrads.org/wiki/index.php?title=PyGrADS_Interactive_Shell |
Visualisation
2 D Plots with Pylab
1 from pylab import *
2 # The seawater module is installed only for Python2.6.2:
3 # module load Python/2.6.2
4 import seawater
5
6 S=linspace(0,35)
7 T=linspace(-2,35.0)
8
9 rho=zeros((S.size,T.size))
10
11 for i,t in enumerate(T):
12 rho[i,:]=seawater.dens(S,t)
13
14 figure()
15 CS = contour(S,T,rho,15,colors='k')
16 clabel(CS, fontsize=8, inline=1)
17 ylabel('Temperature [$^\circ$C]')
18 xlabel('Salinity')
19 title('Sea water density [kg/m$^3$]')
20 show()
21 savefig('density.png',dpi=75)
Basemap
The matplotlib basemap toolkit is a library for plotting 2D data on maps in Python.
Set the correct path for using Basemap
module load R/2.7.0 module load Python/2.6.2
GMT
GMT is an open source collection of ~60 tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing publication quality scientific plots.
In particular useful are the gridding routines which can be used for irregular sampled oceanographic as well as for satellite data.
GMT can be easily applied together with Python using the os module.
Google Earth
Documentation:
http://code.google.com/apis/kml/documentation/
Chlorophyll data:
http://oceancolor.gsfc.nasa.gov/cgi/climatologies.pl
Download png and make black transparent
convert -transparent black A20020012007273.L3m_CU_CHLO_4.png A20020012007273.L3m_CU_CHLO_4_trans.png
Create .kml file
<?xml version="1.0"?> <kml xmlns="http://earth.google.com/kml/2.1"><Document><name>Chlorophyll Climatology</name> <Folder> <Snippet maxLines="0"/> <name>MODIS</name> <ScreenOverlay> <name>UHH Logo</name> <color>ffffffff</color> <visibility>1</visibility> <Icon> <href>http://www.ifm.uni-hamburg.de/logo_uhh_neu.gif</href> </Icon> <overlayXY x="0" y="1" xunits="fraction" yunits="fraction"/> <screenXY x="5" y="5" xunits="pixels" yunits="insetPixels"/> <size x="90" y="90" xunits="pixel" yunits="pixel"/> </ScreenOverlay> <LookAt> <longitude>8</longitude> <latitude>53</latitude> <altitude>2000000</altitude> <heading>0</heading> </LookAt> <Folder> <Snippet maxLines="0"/> <name>Chlorophyll</name><GroundOverlay> <name>2002-2007</name> <visibility>1</visibility><color>ffffffff</color> <Icon><href>A20020012007273.L3m_CU_CHLO_4_trans.png</href></Icon> <LatLonBox><north>90</north><south>-90</south><east>180</east><west>-180</west></LatLonBox> </GroundOverlay></Folder></Folder></Document></kml>
Grads
http://opengrads.org/wiki/index.php?title=PyGrADS_Interactive_Shell