continious Zero Matrix filling

I have a GUI in which ill enter values and save those variables in one Matrix. So every time i enter variables and push the button i want the matrix to get populated continiously.

Here is my work so far:

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2]; % vecotr in which the variables are written in

mat=zeros(100,8); % Zero Matrix with 8 columns for the 8 variables and 100 rows max.

mat(1,1:length(sc))=sc % here i want to write the vektor into the zero matrix

% save in variable setappdata(0,'sc',sc)

i dont know how i can write the code for adding the variables into the zero matrix without erasing the last ones. so every time i push the button in the gui i want the vector sc to be saved in the zero matrix .

thanks

Answer 1

[Nirmal]

In that case you need to setup a counter lets say cnt

cnt=0%initialization at the very beginning

Now you need to use the counter as the index. Where you want to use a loop or not is totally upto you and the application you are building.

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2]; % vecotr in which the variables are written in
mat(cnt,1:length(sc))=sc % here i want to write the vektor into the zero matrix
cnt=cnt+1;%increment the counter

[Smiljan]

thanks for the help. i am still having problems.

when i write cnt=0 there is an error in matlab because it says indices must be real positive.

here is my code :

cnt=1;

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2];

mat=zeros(10,8);

mat(cnt,1:length(sc))=sc % here i want to write the vektor into the zero matrix

cnt=cnt+1;%increment the counter

every time i push the button it only writes down the vektor in the first row and overwrites its when pushing again with new numbers

[Smiljan]

sorry this is my for loop :

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2];

mat=zeros(10,8);

for cnt=1;

mat(cnt,1:length(sc))=sc % here i want to write the vektor into the zero matrix

cnt=cnt+1;%increment the counter

end

[Nirmal]

your initialization of the counter shouldnot be done inside the event handler for the push button, it should be initialized else where(probably at the time when your GUI loads), then every time the button is pushed you save the vector into the matrix and increment the counter and save it again. You might want to save it into handles. like

%initialization

handles.cnt=1;

guidata(hObject,handles);

-----------------------------------

%inside the button event handler.

cnt=handles.cnt;

%now you can use the counter as the index. You need to increment and save it again into the handle.

[Smiljan]

thanks again for the help. i would never thought of initializing at the opening function instead of the push button function.

do i need a loop for that or is it possible without?

[Nirmal]

no you dont need anyloop.

[Smiljan]

so without any loop and can also write it like this?:

% in the push button function:

cnt=handles.cnt;

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2];

mat=zeros(10,8);

mat(cnt,1:length(sc))=sc % here i want to write the vektor into the zero matrix

cnt=cnt+1;%increment the counter

[Smiljan]

Sorry for bothering again. I still have problems with this.

Here is what i wrote in the opening GUI function:

handles.cnt=1; %start the counter

handles.mat=zeros(10,8);% zero matrix

guidata(hObject,handles);

Here the push button function:

sc = [d, l, hs1, hs2, bs1, bs2, phi1, phi2];

mat=handles.mat;

cnt=handles.cnt;

mat(cnt,1:8)=sc; % here i want to write the vektor into the zero matrix

cnt=cnt+1;

handles.cnt=cnt ; %increment the counter

handles.mat=mat;

guidata(hObject,handles);

what could be the problem?

[Smiljan]

now it works :)