Re: [Gnuplot-info] Multiple string concatenation after title using column(n) function

[AceStrider1 <Ace...@ya...>]

Thomas,

Thank you very much for the prompt reply and suggestion.  Your method seems
to work at concatenating.  It is correctly reading the values from the
columns.  The only strange thing now is that gnuplot in now using the first
line of my last group (index 79) instead of (index 0).

For Instance my datafile out.txt looks like:

#NPARTICLES	m 	C   	b	A       	B       	STDEV_A     
100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04
1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04
10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05
100000000  	1 	0.1 	0	0.020740	0.231890	1.425300E-05
                                                        
                                                        
100000     	5 	0.1 	0	0.021760	0.001920	4.613800E-04
1000000    	5 	0.1 	0	0.021780	0.002020	1.459800E-04
10000000   	5 	0.1 	0	0.021670	0.002070	4.604500E-05
100000000  	5 	0.1 	0	0.021690	0.002050	1.456700E-05
                                                        
                                                        
100000     	10	0.1 	0	0.021710	0.000020	4.608600E-04
1000000    	10	0.1 	0	0.021570	0.000010	1.452900E-04
10000000   	10	0.1 	0	0.021710	0.000010	4.608800E-05
100000000  10	0.1 	0	0.021680	0.000010	1.456300E-05


100000     	20	0.99	4	0.767610	0.013350	1.335600E-03
1000000    	20	0.99	4	0.770680	0.013310	4.204000E-04
10000000   	20	0.99	4	0.769150	0.013460	1.332500E-04
100000000  20	0.99	4	0.769360	0.013440	4.212400E-05

So I am plotting the correct data, except the labels are off.  I confirmed
it was the first line of my
last index group by changing 0.99 to 0.79 and plotting.

This is what my gnuplot file looks like now:

reset

set terminal svg
set output "CASE0.svg"
set xlabel 'Particles'
set ylabel 'Fraction'
set grid
set log x
set xrange [ 10000 : 1000000000]
set title "Albedo"

plot "OUT.txt" using 0:(my_title="Analog m = ".stringcolumn(2)." C =
".stringcolumn(3)." b = ".stringcolumn(4) , 0/0) \
every ::0::0 notitle, "" index 0 using 1:5:7 title my_title with yerrorbars
3

set terminal wxt
replot



I believe every ::0::0     means to use the first line only.
I am not so sure about 0/0 <-- it did not seem to make a difference if I had
it in there or not.

Thanks Again,

Adan


AceStrider1 wrote:
> 
> Hi All,
> 
> I am trying to set a title on the legend based on data from multiple
> columns.
> 
> for instance the file name is out.txt:
> 
> #N	        m 	C   	b	A       	B       	STDEV_A     	STDEV_B     
> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04	1.335500E-03
> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04	4.222800E-04
> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05	1.334100E-04
> 100000000  1 	0.1 	0	0.020740	0.231890	1.425300E-05	4.220400E-05
> 
> I am plotting using the following:
> 
> set log x
> set xrange [ 10000 : 1000000000]
> set title "Albedo"
> plot "OUT.txt" index 0 using 1:5:7  title  column(2) with yerrorbars 3
> 
> 
> 
> This works, but I am having a difficult time combining say column 2, 3,
> and 4 as in
> "m = ".column(2)." C = ".column(3)." b = ".column(4)
> 
> Does anyone have any idea?
> 
> Thank,
> Adan
> 
> 
> 

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