Why do I have an error saying "Invalid file identifier"?

Hello, I have an error saying:

Error using fprintf

Invalid file identifier. Use fopen to generate

a valid file identifier.

Error in EXP1_Generate_batch_ver1 (line 106)

fprintf(fileID,'Formattyp = 1\n');

this is my code:

myBatchName = '\\\\data-be\\data-ti-2019\\eit\\50_Labore\\T016-Photovoltaik_1\\06_Projekte\\02_Aktiv\\2019_Schenker_Storen\\DOCS_Hannah\\Experiment1\\02_Generate_Batch_File\\Batch.csv';
fileID = fopen(myBatchName,'w');
fprintf(fileID,'Formattyp = 1\n');
fprintf(fileID,'Save = month\n');
fprintf(fileID,'name ; longitude ; latitude ; altitude ; hor ;  azimuth ; inclination \n'); %column titles
path='\\\\data-be\\data-ti-2019\\eit\\50_Labore\\T016-Photovoltaik_1\\06_Projekte\\02_Aktiv\\2019_Schenker_Storen\\DOCS_Hannah\\Experiment1\\02_Generate_Batch_File\\';

what am I doing wrong? Thanks :)

Answer 1

[the cyclist]

I would guess that the value of fileID that is generated is -1, meaning that there was a problem with the fopen function. A likely culprit is that you do not have write permissions.

Take a look at this question/answer for some ideas on how to resolve it.