2d plot with gnuplot with user defined thickness

Question

2d plot with gnuplot with user defined thickness

rk_19 (Structural)

(OP)

6 Aug 18 12:28

hi, i have a set of x,y,t in a text file sect.txt.. first line represents x1,y1,t1 and second is x2,y2,t1... the 4th line(3rd line is blank) is x3,y3,t2, followed by x4,y4,t3... i want to plot line which has coordinates x1,y1 and x2,y2, with thickness = t.. similary next line has coord = x3,y3 and x4,y4 with thickness=t2 and so on for n times.. with the code below, i am able to plot the 2d lines in gnuplot, but unable to incorporate thickness. could anyone suggest.. thanks
0.0000000000000000 5.0000000000000000 5
1084.0000000000000 5.0000000000000000 5

542.00000000000000 10.000000000000000 1
542.00000000000000 981.00000000000000 1

0.0000000000000000 990.50000000000000 2
1084.0000000000000 990.50000000000000 2

392.00000000000000 1017.5000000000000 4.5
692.00000000000000 1017.5000000000000 4.5

392.00000000000000 1682.5000000000000 3
692.00000000000000 1682.5000000000000 3

542.00000000000000 1035.0000000000000 2
542.00000000000000 1665.0000000000000 2

code
set xlabel "X Axis (Major) "
set ylabel"Y Axis (Minor) "
coord="sect.txt"
set timestamp
set autoscale keepfix
set view equal xy
plot coord using 1:2 with linespoints

Celt83 (Structural) · Answer 1 · 2018-08-06 19:36:57

From the Gnuplot Documentation:
This plots file "data" with variable pointsize read from column 4
plot ’data’ using 1:2:4 with points pt 5 pointsize variable

I am not too familiar with the Gnuplot syntax but based on some their examples you could try:

plot coord using 1:3 with linespoints lw variable

you might need to split your data sets across columns instead of rows:
0 5 5 542 10 1 0 990.5 2 392 1017.5 4.5 392 1682.5 3 542 1035 2 for the first coordinate of each set

Open Source Structural Applications: https://github.com/buddyd16/Structural-Engineering

Come Join Us!

Posting Guidelines

Related Projects

2d plot with gnuplot with user defined thickness