Math form and uitable

Question

john 2014-1-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112293-math-form-and-uitable

评论： john 2014-1-15

Hi, I have uitable and edit box. If I write 0.10000002 into edit box, than in uitable I get 0.10000002....this is ok. But if I write 0.00000002, than I get 0.00000002....but how can I get it in form 2.0*10^(-8)???

Thank you.

This is my code:

UserData.celkovamatica=cell(2,2);
        for i=1:2
             for j=1:2
                 UserData.celkovamatica{i,j}='0';
             end
        end
UserData.celkovamatica{1,1}=sscanf(get(handles.edit6,'string'), '%s');
T2=cellstr(char(UserData.celkovamatica{1,1}));
result=strcat('<HTML>',T2);
t = uitable('Parent',f,'Data',result)

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Answer 1

Walter Roberson 2014-1-13

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112293-math-form-and-uitable#answer_120798

在 MATLAB Online 中打开

Your code

sscanf(get(handles.edit6,'string'), '%s')

has the same effect as

get(handles.edit6, 'string')

unless the contents of the edit box have multiple parts separated by spaces (in which case your code pulls out only the first one.)

In order to get 2.0*10^(-8) you would need to convert to numeric form and then convert the numeric form to string using a different format.

If you convert to numeric form and store numbers into UserData.celkovamatica instead of strings, then you could set ColumnFormat to 'short g' to get 2e-08 as the output.

http://www.mathworks.com/help/matlab/ref/uitableproperties.html#brglhyc

If that is not acceptable, then you will need to store strings (like you do now) and format it yourself, such as

s = sprintf( '%.1e', str2double(get(handles.edit6,'string')));

and then do string manipulation on the '2.0e-08' that results

UserData.celkovamatica{1,1} = regexp(s, {'e', '$'}, {'*10^(', ')'})