Error: Singular matrix in Invert_RtR

[Stefan Epple]

Hello,
can someone please help me. I get the following error:
gnuplot> load '\test.plt'iter      chisq       delta/lim  lambda   t             d               0 2.7610594417e+11  0.00e+00 3.54e+03  1.700000e+03  5.000000e+03   1 4.1437314074e+10 -5.66e+05 3.54e+02  1.700000e+03  1.904871e+04   2 4.1437272540e+10 -1.00e-01 3.54e+01  1.700000e+03  1.905463e+04         "\test.plt", line 8: Singular matrix in Invert_RtR
gnuplot> 

I use the code below:

resetg(x)= ((Cab)/((x5)((exp(Cb/(x*t))-1))))+dCa=0.000000000000000374177107000000b=0.0000006Cb=0.014387752t=1700d=5000fit g(x) 'test2.dat' using 1:2 via t,d
set ylabel "y"set xlabel "x"set border lw 3
set terminal windowsplot 'test2.dat' using 1:2 with points title "Messdaten", g(x) title "FIT"
set terminal jpeg font arial 18 size 1024,768set output 'test2.jpeg'replot
Thanks for your help

Stefan

[Hans-Bernhard Broeker]

The post is all but unreadable in plain text. Might you care re-issuing it, in suitable quote tags this time so the formatting doesn't squashed?

[Stefan Epple]

Of course, I hope so it is better

I get the following error:

gnuplot> load '\\test.plt'
iter      chisq       delta/lim  lambda   t             d            
   0 2.7610594417e+11  0.00e+00 3.54e+03  1.700000e+03  5.000000e+03
   1 4.1437314074e+10 -5.66e+05 3.54e+02  1.700000e+03  1.904871e+04
   2 4.1437272540e+10 -1.00e-01 3.54e+01  1.700000e+03  1.905463e+04
         "\\test.plt", line 8: Singular matrix in Invert_RtR

gnuplot> 

I use the code below:

reset
g(x)= ((Ca*b)/((x**5)*((exp(Cb/(x*t))-1))))+d
Ca=0.000000000000000374177107000000
b=0.0000006
Cb=0.014387752
t=1700
d=5000
fit g(x) 'test2.dat' using 1:2 via t,d

set ylabel "y"
set xlabel "x"
set border lw 3

set terminal windows
plot 'test2.dat' using 1:2 with points title "Messdaten", g(x) title "FIT"

set terminal jpeg font arial 18 size 1024,768
set output 'test2.jpeg'
replot

[Hans-Bernhard Broeker]

{Fine-tuned the report a bit more]

Sorry to be a pest, but without the data file, that's still quite irreproducable