Re: 20041109:conversion of x-axis

>To: address@hidden
>From: Philipp =?iso-8859-1?q?H=F6fer?= <address@hidden>
>Subject: conversion of x-axis
>Organization: University of Ottawa
>Keywords: 200411092320.iA9NKSvV028033

Hi Philipp,

> I use ncbrowse to plot exported data from "Millennium Chromatography Manager 
> 2.10". 
> 
> While running a sample a measurement is taken every half a second over the 
> total run time of 65 min. When I plot the obtained data with ncbrowse the 
> chromatogram looks excellent (the way it shoud be) but the dimension of the 
> x-axis is 0.5 sec. Therefore, the maximum value shown in the plot is the 
> number of measurements (65 x 120 = 7800, 120 measurements per minute):
> 
> X Axis --> point_number (7800 points) 
> Y Axis --> ordinate_values [point_number]
> 
> Is it possible to convert the dimension into minutes so that the
> maximum value shown at the x-axis is 65 instead of 7800?

Unidata is not the author or maintainer of the ncbrowse package, so I
can't be sure about it's capabilities, but in a superficial look at the
documentation, it didn't appear to provide any units conversions or
way to change the units on the axes.

There is another netCDF package named NCO written by Charlie Zender
that includes command-line programs for units conversion, in the
programs ncflint and ncks, among others.  The documentation for the
units conversion, with examples, is in section 3.14 of the NCO User's
Guide, and the package is freely available from:

  http://nco.sourceforge.net

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden          http://www.unidata.ucar.edu/staff/russ