String and two variables

Question

Adrian Pielmeier 2018-6-22

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https://ww2.mathworks.cn/matlabcentral/answers/406921-string-and-two-variables

编辑： Stephen23 2018-6-22

Hello Community,

In an excel File i got the following lines:

T_DCT_PK_WDT_W01B1_RANGE

T_DCT_PK_WDT_W02B1_RANGE

T_DCT_PK_WDT_W03B1_RANGE

T_DCT_PK_WDT_W04B1_RANGE

T_DCT_PK_WDT_W05B1_RANGE

the W..B. goes on and isnt in an right order.

So i would to do something like this but there is an error in my syntax:

str = ( 'T_DCT_PK_WDT_W%B%_RANGE' , i ; a )

I would like to have two variables in the string.

I hope you all understand

Thank you!

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Stephen23 2018-6-22

编辑：Stephen23 2018-6-22

在 MATLAB Online 中打开

"...the W..B. goes on and isnt in an right order."

You could easily sort those char vectors into alpha-numeric order by downloading my FEX submission natsort, which sorts a cell array of char vectors by the characters and the values of any numeric substrings:

>> C = {...
    'T_DCT_PK_WDT_W01B1_RANGE'
    'T_DCT_PK_WDT_W02B1_RANGE'
    'T_DCT_PK_WDT_W03B1_RANGE'
    'T_DCT_PK_WDT_W04B1_RANGE'
    'T_DCT_PK_WDT_W05B1_RANGE'};
>> C = C(randperm(numel(C))) % random order
C = 
    'T_DCT_PK_WDT_W01B1_RANGE'
    'T_DCT_PK_WDT_W02B1_RANGE'
    'T_DCT_PK_WDT_W03B1_RANGE'
    'T_DCT_PK_WDT_W04B1_RANGE'
    'T_DCT_PK_WDT_W05B1_RANGE'
>> D = natsort(C) % sort into alpha-numeric order
D = 
    'T_DCT_PK_WDT_W01B1_RANGE'
    'T_DCT_PK_WDT_W02B1_RANGE'
    'T_DCT_PK_WDT_W03B1_RANGE'
    'T_DCT_PK_WDT_W04B1_RANGE'
    'T_DCT_PK_WDT_W05B1_RANGE'

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Answer 1

Stephen23 2018-6-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/406921-string-and-two-variables#answer_325791

编辑：Stephen23 2018-6-22

在 MATLAB Online 中打开

sprintf('T_DCT_PK_WDT_W%02dB%d_RANGE',i,a)

For example:

>> sprintf('T_DCT_PK_WDT_W%02dB%d_RANGE',5,1)
ans = T_DCT_PK_WDT_W05B1_RANGE

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Stephen23 2018-6-22

在 MATLAB Online 中打开

"And how do i now search for an specific number?"

Your question does not mention that you want to "search" for a specific number. What does this mean? What is the "number" that you want to search for, and where do you want to search for it?

This line of code hints that you apparently want to match a particular string:

if(i=5 %%a =2)

If this is the case you could do this by using regexp and str2double to extract the numbers:

>> str = 'T_DCT_PK_WDT_W05B1_RANGE';
>> str2double(regexp(str,'\d+','match'))
ans =
   5   1

Adrian Pielmeier 2018-6-22

Sry for my bad english.

So i got an Excel file whith lines i posted at first. i want to write many if cases for each line in the excel so for example for the line with

T_DCT_PK_WDT_W01B1_RANGE

i want to give back a specefic funktion

i would like to use the variables i and a like you said in my if clause to ask if a=5 and i = 2 the do function

I hope u understand what i mean

Thx!

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