USGS Digital Spectral Library
Instructions for downloading and viewing
Descriptions and Plots on a local machine.
Below are instructions for downloading the USGS spectral library files so you can easily bring up plots of spectra with any internet browser (like netscape) on your office/home pc, laptop, or macintosh or other unix machine.
You can preview how it will look by going to the web page:
The html files will be updated as new spectral libraries are released and will cover the 0.2 to 150 micron range. You will be able to click on one of 3 spectral ranges to get a plot (0.2-3, 1.5-6, and 5-150 microns).
On your local machine:
mkdir splib # make a directory to put the library cd splib # cd to that directory mkdir DESCRIPT # make a directory for the description files mkdir PLOTS.lib04a # make a directory for the for the plots mkdir ASCII.FILES # make a directory for the for the spectral data
Now, ftp to speclab and do the following:
ftp speclab.cr.usgs.gov # start ftp anonymous # login anonymous your_name@your_machine # password cd pub/spectral.library # where the spectral library is located binary # transfer in binary mode prompt # don't ask for each file, just get them all mget *.html *.gif # get the html and icon files cd DESCRIPT # where sample descriptions are lcd DESCRIPT # put descriptions in a local directory mget *.html # get all description files cd .. # cd back to main level cd PLOTS.lib04a # cd to where plots are lcd .. # local cd to main level lcd PLOTS.lib04a # Local directory now splib/PLOTS.lib04a mget *.gif # plots of all spectra mget *.obj # tgif obj files for all spectra cd .. # cd back to main level cd ASCII.FILES # cd to where ascii data are lcd .. # local cd back to main level lcd ASCII.FILES # put ascii spectral, data here mget *.spc # ascii data for all spectra bye # you are all done
Now, start your browser (like netscape), and open the file splib/spectral-lib.desc+plots.html
On a PC, it might be something like: C:\splib\spectral-lib.desc+plots.html
(You could rename spectral-lib.desc+plots.html to something like s.html so you don't have to type as much.)
The tgif *.obj files can be edited with additional information (even spectra from multiple plots stacked on top of each other to create new plots). Tgif can putput postscript so you can make publucation quality plots. Tgif is available on the net; it is a drawing program similar to (but different than) adobe illustrator.
U.S. Geological Survey,
a bureau of the U.S. Department of the Interior
This page URL= http://speclab.cr.usgs.gov/spectral.lib04/localview.html
This page is maintained by: Dr. Roger N. Clark rclark @speclab.cr.usgs.gov
Last modified August 23, 1999.