PSXY with three columns data

Hi all,
I have a data file that have three columns: the 1st column  is frequency, the second noise and the 3rd is the color value(with cpt file) to fill the line , then i want to plot it with a seimic-log system using psxy,however nothing happens. what`s the problem and which command should i use if i used the wrong GMT command? 

The following command is what i use:


psbasemap -R0.01/50/-200/-50 -JX6il/5i -Ba1f3p:"frequecy":/10:"":WS -K -P -V>plot.ps
psxy BHNxyz.txt -R -J -B -Cpsdpdf.cpt -Gred -S1 -V -O -K >> plot.ps
psscale -D4.1i/2.55i/5.1i/0.25i -Cpsdpdf.cpt -I0.5 -O>> plot.ps

I attached the data file(BHNxyz.txt ) ,cpt file(psdpdf.cpt) and the ps file that i plotted..'

Thanks,
wsc 

2014-04-22 



wangshicheng305