Re: Extracting a line from a grid
Paul Wessel <[email protected]>
| Newsgroups | gmane.comp.gis.gmt.user |
|---|---|
| Message-ID | <[email protected]> |
And if you read the email train you would see grdtrack -E is a GMT 5 feature. GMT 4 scheme is also discussed in the previous emails. -p On Feb 25, 2014, at 6:22 PM, Sanjay <[email protected]> wrote: > When i tried to extract the profile from grdtrack > error message came with E is unrecognized option. > i am using GMT 4.5.7 > Regards > sanjay > > > > > On Wednesday, February 26, 2014 1:42 AM, Paul Wessel <[email protected]> wrote: > Hm, I must be running a more recent version than you (I only get the 3 cols but if you are running the Nov 5 release it may have a bug we have since fixed); so you are also getting distances along the line. Until the next release (or update yours) you could use -o0,1,3 to get what you want. > > -p > > On Feb 25, 2014, at 10:00 AM, Shahar Barak <[email protected]> wrote: > >> Thanks, Paul! >> I used: >> gmt grdtrack -G${grd_file} -E${LON1}/${LAT1}/${LON2}/${LAT2}+i0.005d >> but I expected an output of 3 columns: lon / lat / interpolated-data-point. >> But I got 4 columns in the output. The first two seems like the lons and lats, not sure about the other two. >> -117 32.25 0 0.0597692318261 >> -116.995762712 32.2526483051 0.00499681204029 0.0604514658204 >> -116.991525424 32.2552966102 0.00999362408057 0.0611412584514 >> -116.987288136 32.2579449153 0.0149904361209 0.0618330594925 >> -116.983050847 32.2605932203 0.0199872481611 0.0625284501071 >> -116.978813559 32.2632415254 0.0249840602014 0.0632297094842 >> -116.974576271 32.2658898305 0.0299808722417 0.0639385271851 >> -116.970338983 32.2685381356 0.034977684282 0.0646567940722 >> >> gmt grdinfo ${grd_file} -C >> tomo_slice.grd -120 -114 32 36 -0.333035200834 0.176299631596 0.005 0.005 1201 801 >> >> >> >> On Tue, Feb 25, 2014 at 11:18 AM, Paul Wessel <[email protected]> wrote: >> Yes, see grdtrack -E >> >> On Feb 25, 2014, at 8:58 AM, Shahar Barak <[email protected]> wrote: >> >> > Hi, >> > >> > Is there a way to use GMT to extract data points from a grid along a line, given the 2 end points? >> > >> > Thanks, >> > >> > Shahar >> > To unsubscribe, send the message "signoff gmt-help" to [email protected] >> >> To unsubscribe, send the message "signoff gmt-help" to [email protected] >> >> To unsubscribe, send the message "signoff gmt-help" to [email protected] > > To unsubscribe, send the message "signoff gmt-help" to [email protected] > > > To unsubscribe, send the message "signoff gmt-help" to [email protected] To unsubscribe, send the message "signoff gmt-help" to [email protected]