本帖最后由 edwardli 于 2015-1-2 15:32 编辑
set arrowhead
set arrowhead size
where size is the size of the arrowhead. The default is 0.05. If set to 0, no arrowhead is plotted. If set to a negative value, the size of the arrowhead will be scaled to the size of the arrow. The value specified will be the size when the arrow is one inch in length.
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set strmden / set strmoptsset strmden density <arrow_spacing> <arrow_size> <arrow_type> This command controls the appearance of the streamlines, drawn with 'set gxout stream'. density an integer between -10 and 10. Negative values are for high-res grids. The default value is 5.
arrow_spacing a real number > 0.001 that controls the distance (in page inches) between arrows on each streamline
arrow_size a real number >= 0.0 that controls the size (in page inches) of the arrows. The default value is 0.05.
arrow_type may be 1 (for open arrow heads, "\/") or 2 (for closed arrow heads, filled triangles). The default value is 1.
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