Create plot (fig file) from text file

2023 1 19
1 个回答
更新时间：2023 1 31
4 次查看（30 天）

0 个投票

I am using the below code to import data from text file. The code is working, but the .Fig file are very slow afterwards
Is the code ok, or is there a better way
datafile = 'Test_1_pre_test_with_Prose_Fan_Load_streng_1_error_at_8_procent_115222_230119_TEST_1.txt';
T = readtable(datafile,'Format','auto');
T1 =T;
hold on
t = T1.TIME;
P = T1.Properties.VariableNames(2:end);
for K = 1 : length(P)
fn = P{K};
plot(t, T1.(fn), 'DisplayName', fn);
end
hold off
set(gcf, 'visible', 'on')
legend show

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回答（1 个）

Walter Roberson
Walter Roberson 2023-1-19

0 个投票

https://www.mathworks.com/help/matlab/creating_plots/plots-that-support-tables.html
T = readtable(datafile,'Format','auto');
P = string(T.Properties.VariableNames) ;
plot(T, P(1), P(2:end)) ;
legend show

7 个评论
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Steen
Steen 2023-1-23
I am trying to read numeric values. So i STRING correct?
"TIME","M101 POWER [KW]","M102 POWER [KW]","M103 POWER [KW]","M104 POWER [KW]","M105 POWER [KW]","M106 POWER [KW]","M107 POWER [KW]","M108 POWER [KW]","M109 POWER [KW]","M110 POWER [KW]","M111 POWER [KW]","M112 POWER [KW]","M113 POWER [KW]","STRING 1 [A]","STRING 2 [A]","DC CABINET DC OUTPUT [A]","VFD AC OUTPUT [VAC]","DC CABINET DC OUTPUT [VDC]","VFD DC INPUT [VDC]","STRING 1 [VDC]","STRING 2 [VDC]"
+0.000000000E+000,-4.00000E-002,-1.00000E-002,-2.00000E-002,-5.00000E-002,+6.11600E+000,-3.75000E-002,-2.50000E-002,-1.25000E-002,+0.00000E+000,-3.75000E-002,-2.50000E-002,-3.75000E-002,+1.25000E-002,+5.00000E-001,+0.00000E+000,+8.82500E+001,+5.29000E+002,+5.26500E+002,+5.23500E+002,+4.23500E+002,+4.22000E+002
+2.000000000E-003,-4.00000E-002,-1.00000E-002,-2.00000E-002,-6.00000E-002,+6.22600E+000,-5.00000E-002,-1.25000E-002,-1.25000E-002,+0.00000E+000,-1.25000E-002,-1.25000E-002,-3.75000E-002,+1.25000E-002,+5.00000E-001,+2.50000E-001,+1.38250E+002,+5.28500E+002,+5.33500E+002,+5.24000E+002,+4.23500E+002,+4.22000E+002
+4.000000000E-003,-2.00000E-002,-3.00000E-002,-3.00000E-002,+0.00000E+000,+6.42400E+000,-5.00000E-002,-3.75000E-002,+0.00000E+000,-1.25000E-002,-2.50000E-002,-1.25000E-002,-3.75000E-002,+1.25000E-002,+5.00000E-001,+2.50000E-001,+1.22000E+002,+5.26500E+002,+5.36500E+002,+5.24000E+002,+4.23500E+002,+4.22000E+002
Walter Roberson
Walter Roberson 2023-1-23
Yes. string() is being applied to a cell array of character vectors that hold the field names. string() is not being applied to the numeric content.
Steen
Steen 2023-1-23
Ok, thanks. But I get the below error when I try to save the .Fig file after it has be generated
Walter Roberson
Walter Roberson 2023-1-23
Try a shorter file name.
Generally speaking it is often more robust to save files to the local system and copy the resulting file to the network file system,instead of saving directly to the network
Steen
Steen 2023-1-24
I does not help to make the the file name shorter. But if I save the .Fig file after it is created by my first code, there is no problem. but when I use the below code, I get the save error
datafile = 'Test_1_pre_test_with_Prose_Fan_Load_streng_1_error_at_8_procent_115222_230119_TEST_1.txt';
T = readtable(datafile,'Format','auto');
P = string(T.Properties.VariableNames) ;
plot(T, P(1), P(2:end)) ;
Steen
Steen 2023-1-31
I might be because of file size. If I make a shorter file, I can save it. But I cant change the file size og why can do you think I can save the file, when using the below code
datafile = 'Test_1_pre_test_with_Prose_Fan_Load_streng_1_error_at_8_procent_115222_230119_TEST_1.txt';
T = readtable(datafile,'Format','auto');
T1 =T;
hold on
t = T1.TIME;
P = T1.Properties.VariableNames(2:end);
for K = 1 : length(P)
fn = P{K};
plot(t, T1.(fn), 'DisplayName', fn);
end
hold off
set(gcf, 'visible', 'on')
legend show

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Steen
Steen
2023-1-19

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Steen
2023-1-31

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