1

十字

2

叉

3

星子号

4

方块（空心）

5

方块（实心

6

圆圈（空心）

7

圆圈（实心）

8

三角（空心头向上）

9

三角（实心头向上）

10

三角 （空心头向下）

11

三角（实心头向下）

12

菱形（空心）

13

菱形（实心）

1

红色

2

绿色

3

蓝色

4

粉红

5

淡蓝

6

棕色

7

米蓝

8

橙色

Example 1

命令

plot sin(x) title ‘sin(x)’ w l lt 1 lw 2, cos(x) title ‘cos(x)’ w l lt 2 lw 2

效果

Example 2

命令

set key outside

plot sin(x) title ‘sin(x)’ w l lt 1 lw 2, cos(x) title ‘cos(x)’ w l lt 2 lw 2

效果

Example 3

命令

plot ‘F:\practice\run_source.dat’ using 1:2 with boxes

效果

说明

从文件中导入数据，进行图形化显示

Example 1

命令

set xlabel "x"

set ylabel "y"

set key top

set border 4095

set xrange [-15:15]

set yrange [-15:15]

set zrange [-0.25:1]

set samples 25 #设置函数生成一个图时point的数目

set isosamples 20 #设置x/y轴网格的个数

set title "pm3d demo. Radial sinc function. Default options."

set pm3d #设置当前为pm3d模式，构造一个有颜色的非透明的图形

set palette #设置调色板

splot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2) #生成三维图形

效果

Example 2

命令

#接上一个实例

set title "gray map"

set pm3d map

set palette gray

set samples 100; set isosamples 100

replot

效果

Example 3

命令

set title "set hidden3d"

set samples 30; set isosamples 30

set hidden3d

set pm3d

set surface

set view 50,220

set xrange [-2:2]

set yrange [-2:2]

splot log(x*x*y*y)

效果

Example 4

命令

set size 1,1; set origin 0,0

set grid layerdefault

set xlabel "X LABEL"

set ylabel "Y LABEL"

set sample 11; set isosamples 11

set pm3d map

set palette

set colorbox

set lmargin 0

set pm3d flush begin

set title "Datafile with different nb of points in scans; pm3d flush begin"

set pm3d flush begin noftriangles scansforward

splot 'triangle.dat'

效果

Example 5

命令

set title "coloring according to the 3rd 'using' parameter (left) and to the z-value (bottom)"

set border 895

splot \

    'binary2' binary u 2:(12 - column(3) * 10):1 notitle w lines, \

    'binary2' binary u (-12 + column(3) * 10):2:1:(-12 + column(3) * 10) notitle w pm3d, \

    'binary2' binary u 1:2:(column(3) * 10 - 12) notitle w pm3d

效果

Example 6

命令

set pm3d map

set iso 4

set samples 4

set xrange [0:3]

set yrange [0:3]

set cbrange [0:9] #设置由pm3d设定的颜色的取值范围

f(x,y)=2*x+y

set key off #关闭key，还可以使用unset key

unset xtics

unset ytics

set tics scale 2 #设置各个坐标轴的

set colorbox horizontal user origin 0.1,0.025 size .8,0.02 #设置颜色的变化范围，显示在底部

#设置多表格，每一个表格为3.0 * 3.0，每一个表格中填一个图片

set multiplot #开始绘制多表格图

dx = 1.0/3; dy = 1.0/3; #定义grid的大小

set size dx,dy

set origin 0*dx,0*dy #标识该图片将填入第几个表格

set title "set pm3d corners2color c1"

set pm3d corners2color c1

splot f(x,y)

set origin 2*dx,0*dy

set title "set pm3d corners2color c2"

set pm3d corners2color c2

replot

set origin 0*dx,2*dy

set title "set pm3d corners2color c3"

set pm3d corners2color c3

replot

set origin 2*dx,2*dy

set title "set pm3d corners2color c4"

set pm3d corners2color c4

replot

set origin 0*dx,1*dy

set title "set pm3d corners2color mean"

set pm3d corners2color mean

replot

set origin 2*dx,1*dy

set title "set pm3d corners2color geomean"

set pm3d corners2color geomean

replot

set origin 1*dx,0*dy

set title "set pm3d corners2color median"

set pm3d corners2color median

replot

set origin 1*dx,1*dy

set title "Original grid points"

unset pm3d

set border 0

unset xtics

unset ytics

unset colorbox

splot f(x,y) with linesp ps 3 pt 5 palette

unset multiplot

效果