set arrlab on|off
Toggles drawing the vector arrow label for plots drawn with
set gxout vector.
The default is on and "sticks" until reset by another
set arrlab command.
The position of the arrow label is fixed to be in the bottom right corner of the page, just under the plot. If you want it to appear somewhere else, see the example below which demonstrates how to draw an arrow key using GrADS graphical elements.
This example is a script sample that demonstrates how to turn off the default vector arrow scale and draw another one at any specified location:
'set gxout vector' len = 0.3 scale = 2 xrit = 8.0 ybot = 0.5 'set arrscl 'len' 'scale 'set arrlab off' 'd u;v' rc = arrow(xrit-0.25,ybot+0.2,len,scale) function arrow(x,y,len,scale) 'set line 1 1 4' 'draw line 'x-len/2.' 'y' 'x+len/2.' 'y 'draw line 'x+len/2.-0.05' 'y+0.025' 'x+len/2.' 'y 'draw line 'x+len/2.-0.05' 'y-0.025' 'x+len/2.' 'y 'set string 1 c' 'set strsiz 0.1' 'draw string 'x' 'y-0.1' 'scale return