Matrix formed of a string vector and a double vector

hej got some trouble setting up my matrix, which should look like this:

                            M =

                        Drehzahl  432.5665433
                        Speed     455.3345;
                        Kartoffel 655.655444

but instead, it looks like this:

                        M =

                        Drehzahl  ư
                        Speed     LJ
                        Kartoffel ʏ

how come?

                        clc
                        clear all

                        namen = ['Drehzahl  ';
                                 'Speed     ';
                                 'Kartoffel '];
                        no =    [432.5665433;
                                455.3345;
                                655.655444];
                        no1 =   [432.5665433;
                                455.3345;
                                655.655444];
                        M = [namen, no]
                        N = [no1, no]
                        pointer = fopen('rohdatenfile', 'w');
                        fprintf(pointer,'%s %4.2f\n',M);
                        fclose(pointer);

                        type rohdatenfile

Answer 1

[dpb]

Because you implicitly did a cast to char() when you wrote M--

>> M = [namen, no]
>> whos M
Name      Size            Bytes  Class    Attributes
M         3x11               66  char               

>> fprintf('%s %4.2f\n',namen',no);
Drehzahl  Speed     Kartoffel  432.57
4.553345e+02 655.66

Unfortunately, mixed strings/numeric don't work well with the vectorization of arrays for writing formatted files--each gets handled in order if associate with the proper field. You have to do sotoo--

>> for i=1:size(namen,1),fprintf('%s %4.2f\n',namen(i,:),no(i)),end
Drehzahl   432.57
Speed      455.33
Kartoffel  655.66
>>

Answer 2

[Luki]

closed!