whats wrong with this code?

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Muazma Ali
Muazma Ali 2022 年 8 月 30 日
コメント済み: Muazma Ali 2022 年 9 月 23 日
I have a while loop as shown in the attached file and all these variables
nr_zones_analyzed,
combinations_of_salts, vekt_prosent_best_salt_1,
vekt_prosent_best_salt_2,
samlet_vannaktivitet
,Osmotic_pressure
Are set within the loop
The code relevant for the error that occurred is included in the file.
I get the following error saying:
Conversion to double from cell is not possible.
The error points to this line:
Osmotisk_data(nr_zones_analyzed,:)={nr_zones_analyzed, combinations_of_salts, vekt_prosent_best_salt_1,vekt_prosent_best_salt_2, samlet_vannaktivitet,Osmotic_pressure}
And it occurs when I have run the code for antall_soner = 2.
Can anybody tell me whats wrong with this code..? :)

回答 (2 件)

Image Analyst
Image Analyst 2022 年 8 月 30 日
I didn't look at your code but from the sounds of it you're probably trying to do this with your cell array
dbl = str2double(ca(1));
when you should be using braces to get the contents of the cell, like this:
dlb = str2double(ca{1});
See the FAQ:
It will tell you when to use parentheses, braces, or brackets.
  4 件のコメント
Image Analyst
Image Analyst 2022 年 8 月 30 日
No I cannot overlook (ignore) the fact that the "beregn_osmotisk_trykk" function is missing. Your code won't run without it. You must give it to us if you want our help.
Also I think you overlooked my request for the inputs that should be entered, because you did not tell us any of them. What numbers do we tell your program?

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Walter Roberson
Walter Roberson 2022 年 8 月 30 日
varType=["double", "double", "double", "double", "double", "string"];
varNames=["Zone_nr", "Combinations_of_salts", "Weight_percent_best_salt_1", "Weight_percent_best_salt_2", "Total_water_activity", "Osmotic_pressure"];
So Combination_of_salts must be a double.
C(nr_zones_analyzed, 1)=string(best_salt_1)+ ' ' + string(best_salt_2);
Entries in C are string
combinations_of_salts=C;
So combinations_of_salts is string array.
Osmotisk_data(nr_zones_analyzed,:)={nr_zones_analyzed, combinations_of_salts, vekt_prosent_best_salt_1,vekt_prosent_best_salt_2, samlet_vannaktivitet,Osmotic_pressure}
combinations_of_salts is being sent to the second column of the table, and the second column of the table must be double, but the source is string array.
  5 件のコメント
Muazma Ali
Muazma Ali 2022 年 9 月 23 日
@Walter Roberson It worked for some time then I got same error message when I ran my own program.
And if I run this file attached which is a shorter version of my prog, I dont get anything out for combinations of salts field.. :(
Please help me with my problem

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