Gmt makecpt generate empty output

Q&A GMT.jl Q&A
1

Hi everyone,
Now i try to use GMT 6.3.0 instead of older version (GMT 5.4) like before.
However, there is some problem I facing certainly such a the output of makecpt is empty.

Furthermore, the way i create contour in GMT 6.3.0 is also not work as GMT 5.4.0

Here is my code:

gmt begin Subtropical_High png

gmt set GMT_THEME cookbook
gmt set FONT_ANNOT_PRIMARY  +20p FONT_LABEL +20p  
gmt set MAP_TICK_LENGTH 4p MAP_TICK_PEN 3p MAP_FRAME_PEN 3p
gmt set PROJ_LENGTH_UNIT INCH FORMAT_GEO_MAP ddd:mm:ssF  

gmt makecpt -Cpolar -T100/200/10 > colors.cpt
 
gmt basemap -R100/185/0/45  -JQ180/9   -Bxa10Wf5W -Bya10Nf5N  -BWeSn   -X1 -Y2 

gmt coast   -W1 -G200    -Di 


echo 100 50 20,5,black Period: 1977 - 2020  >TC 
echo 100 47 20,5,black Super Typhoon Cases: 181  >>TC 
echo 147 50 20,5,black Super Track Points (@~\263@~ 130 knots) >>TC 
echo 147 47 20,5,black for intensifying process only: 427 >>TC 

gmt text TC -F+f+jLM  -N   

gmt plot WPSH_197901.txt  -Ccolors.cpt
 
grdsample WPSH_197901.txt.grd -I0.01/1 -GWPSH_197901.txt.grd  

grd2xyz WPSH_197901.txt.grd  >> WPSH_197901.txt.xyz

grdimage WPSH_197901.txt.grd  -Csst1.cpt 

grdcontour WPSH_197901.txt.grd  -CContour_SH.txt -W10/0/0/0 -A30+s30+k0/0/0 -
    
gmt psscale -Ccolors.cpt  -R100/185/0/45  -JQ180/9  -DJCR+o0.58/0i+w6i/0.15i+e  -L -By+lcm  

del MDR lon lat locationE locationW 
gmt end show

Here is file data

image
image1920×1080 167 KB

Thank in advance for your caring and response.

2

From makecpt manual

-H

Modern mode only: Write the CPT to standard output as well [Default saves the CPT as the session current CPT]. Required for scripts used to make animations via movie and batch where we must pass named CPT files.

What is that trailing - doing there?

1 Like
3

I can solve my problem now. Thank you vey much.