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

[Thomas S. <t.s...@fz...>]

oh, i forgot the 'index 0' in the dummy plot:

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

yes, 'every ::0::0' means the 1st line of a data set.

'0/0' means 'undefined', and undefined points are not plotted.


AceStrider1 wrote:
> 
> 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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