Plotting GPX (GPS Exchange Format) data with CDO

Hello,

Is it possible to plot GPX data with CDO?

"GPX, or GPS Exchange Format, is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoints, tracks, and routes."
https://en.wikipedia.org/wiki/GPS_Exchange_Format

If so, would it please be possible to receive any "how to" instructions / tips?

What I would like to do is to plot a route encoded in a GPX file over wind speed and direction encoded in a grib2 and/or NetCDF4 file.

Thank you.

wx_20170506_0430.gpx (35.7 KB) wx_20170506_0430.gpx

Replies (4)

RE: Plotting GPX (GPS Exchange Format) data with CDO - Added by Karin Meier-Fleischer over 3 years ago

Hi,

CDO is not what you need. Just google your question

How to plot data from gpx file format?

-Karin

RE: Plotting GPX (GPS Exchange Format) data with CDO - Added by cdo user over 3 years ago

Hi Karin, What exactly do you mean by that? ;-P cdo user

RE: Plotting GPX (GPS Exchange Format) data with CDO - Added by Karin Meier-Fleischer over 3 years ago

Hm, should I answer this question? Since I am a polite person and always trying to help I will do so then.

In general: The data format GPX cannot be read by CDO (Climate Data Operators) and CDO is not a visualization program, it provides only simple plot routines.

To 'google' the question - search the internet - leads you to many links, like

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjbjubNuMvxAhUK76QKHTJODtIQFjAKegQIAxAD&url=https%3A%2F%2Fwww.andersle.no%2Fposts%2F2018%2Fgpxplot%2Fgpxplot.html&usg=AOvVaw21UzWThtHSk90KJMsGZJ2E),

click on it, and read.

RE: Plotting GPX (GPS Exchange Format) data with CDO - Added by cdo user over 3 years ago

Hi,

Please do not be affraid. Thank you once again for providing the answer. ;-)

As I wrote in my other message, my main environment is Julia and based on preliminary tests of CDO plotting abilities (I understand provided by Magics) I really liked the simplicity and the output thus my question about GPX.

Heaving the opportunity, I will allow myself three additional questions:

- Are you maybe aware about any way of converting GPX to NetCDF4 in order to get CDO plotting it? Based on your experience, do you think that it is a viable option at all? Would converting to csv with ksh script [https://code.mpimet.mpg.de/boards/2/topics/9663?r=9680#message-9680] be a viable option?

- Is CDO able to plot wind barbs? The tutorial provides following information: "thin_fac - Controls the actual number of wind arrows or FLAGS plotted. See Magics++ library for explanation" [https://code.mpimet.mpg.de/projects/cdo/wiki/Tutorial]

- And the last question, as I did only very preliminary tests, is it possible to combine two or more variables in the same plot? For example to plot wind speed, wind direction and pressure in the same plot?

With kind regards, ;-P
cdo user

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