GNUPLOT script - plotting data in real time with scrolling

[ifryd <if...@o2...>]

Hi,

I almost finished my master degree work but I have some problems using
GNUPLOT script dedicated for almost real plotting on screen Wink

Not so long time ago I posted this thread about visualisation data on
screen:

http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=56718&highlight=
My previous post about plotting data on the screen 

Thanks to gintaras_bar from AVR_freaks forum I received really nice script
for plotting in real time.

I tried to change it and adjust it to my needs but actually it is hard to
scroll nicly the screen in  desired speed. Additionaly some undesired plots
occur which are not connected with the samples.
Below I am enclosing these scripts:

plot_log_file.bat: 

REM batch file for starting data plot, from log file
"C:\Program Files\gnuplot422\bin\pgnuplot" init_plot.gnp 

script file for gnuplot initialization init_plot.gnp: 


#### gnuplot script, which is initializing plotting process ####
#

# this variable holds value how many lines are used to plot data already
processed_lines=0

# this constant defines how many lines_from_the_end_of_file to plot (change
according to your needs)
lines_from_the_end_of_file=3000

# this constant defines how many new data lines are received every second
(change according to your needs)
lines_per_second_received=1

# log file to be plotted
file2plot='com_port.log'

# how data should look on a screen
set style data lines

# call script, which does real time plotting
call 'real_time_plot.gnp' 

and my script file which runs real time plot real_time_plot.gnp: 


#
#### gnuplot script, which is plotting in the real time (well, almost :)  )
####
#

# this part expects one column of data per line (row) and is
# plotting lines_from_the_end_of_file if started together with logging
process.
# If started later, when file is bigger than lines_from_the_end_of_file,
# it is plotting more lines.
# if (processed_lines<lines_from_the_end_of_file) plot file2plot; else plot
file2plot every ::processed_lines-lines_from_the_end_of_file

# if you need whole file to be plotted
#plot file2plot

# if you need more columns (series) to plot
#plot file2plot using 1 title 'Col1', file2plot using 2 title 'Col2'

set tmargin 0
set bmargin 0
set lmargin 3
set rmargin 3

unset xtics

set multiplot
set origin 0,0.85
set size 1,0.15
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 1; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 1
# plot file2plot using 1

set origin 0,0.7
set size 1,0.15
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 2; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 2
#plot file2plot using 2

set origin 0,0.65
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 3; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 3
#plot file2plot using 3

set origin 0,0.60
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 4; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 4
#plot file2plot using 4

set origin 0,0.55
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 5; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 5
#plot file2plot using 5

set origin 0,0.50
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 6; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 6
#plot file2plot using 6

set origin 0,0.45
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 7; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 7
#plot file2plot using 7

set origin 0,0.40
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 8; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 8
#plot file2plot using 8

set origin 0,0.35
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 9; else
plot file2plot every ::processed_lines-lines_from_the_end_of_file using 9
#plot file2plot using 9

set origin 0,0.30
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 10;
else plot file2plot every ::processed_lines-lines_from_the_end_of_file using
10
#plot file2plot using 10

set origin 0,0.25
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 11;
else plot file2plot every ::processed_lines-lines_from_the_end_of_file using
11
#plot file2plot using 11

set origin 0,0.20
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 12;
else plot file2plot every ::processed_lines-lines_from_the_end_of_file using
12
#plot file2plot using 12

set origin 0,0.15
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 13;
else plot file2plot every ::processed_lines-lines_from_the_end_of_file using
13
#plot file2plot using 13

set origin 0,0.10
set size 1,0.05
if (processed_lines<lines_from_the_end_of_file) plot file2plot using 14;
else plot file2plot every ::processed_lines-lines_from_the_end_of_file using
14
plot file2plot using 14

# update variables
processed_lines=processed_lines+lines_per_second_received

# rest for 1 second
pause 1

# repeat plotting process
reread





One thing wich I cannot figure out is how many lines I am sending to the PC
via USART.

Maybe there is a way in a GNUPLOT script to plot the data from the file like
1/4 from the end of file ??

That would be the best in this case.

Anyway below I am enclosing a picture of the plot which I would like to
obtain 

http://www.nabble.com/file/p15839729/plot.png 

Additionally, maybe you have other methods for visualization. I would like
to scrool screen to see all signals.

I also posted this thread on:

http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=417656#417656
the same post on www.avrfreaks.net 

Thanks in advance for various solutions and your help 


Adam - if...@o2...
-- 
View this message in context: http://www.nabble.com/GNUPLOT-script---plotting-data-in-real-time-with-scrolling-tp15839729p15839729.html
Sent from the Gnuplot - Dev mailing list archive at Nabble.com.