Read numbers from string by search

this is a simple problem. I have a string e.g.:

Elevation=34.52;AltTX=30.08;AltTxStd=9.8489e-02;AltLatSTD=3.0000e-01;AltRx=31.09;AltRxStd=9.85e-02;TiltX=264.75;TiltXSTD=1.0038e+00;TiltY=269.75;TiltYSTD=1.0037e+00;FieldPolarity=3;Current=7.560;Dataset=1;DaPositions=2814;SondNo=696;SegNo=1;LineNo=0;AveRes=150;

The string is read from a file I opened by fopen and fgets.

Now, I need to read the number from AltTX out from this string. I guess I have to do a search on 'AltTX=' and then read the next 5 characters. Since the text before and after AltTX can change in length I can not just read the same number of characters from the string. Do I use textscan, strfind or what is an easy solutiion?

Answer 1

[Jan]

Str    = 'Elevation=34.52;AltTX=30.08;AltTxStd=9.8489e-02;';  % Abbrev.
Search = 'AltTX';
Index  = strfind(Str, [Search, '=']);
Value  = sscanf(Str(Index + (length(Search) + 1):end), '%g', 1);