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i need a program in matlab..??

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nani kalyan
nani kalyan 2015-5-21
关闭： MATLAB Answer Bot 2021-8-20
I have values like:
0-56 it should multiply with 92.5,
57-112 it should multiply with 95.2,
113-168 it should multiply with 95.8,
169-225 it should multiply with 95.9.
I need a program for these conditions. Please help me friends...

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回答（3 个）

Walter Roberson
Walter Roberson 2015-5-21
histc with the two outputs to figure out which range you are in. Use the bin number to index a vector of constants to multiply.
  5 个评论
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Joseph Cheng
Joseph Cheng 2015-5-21
x should be test. I was rushed but i'm sure you could have figured that out.
nani kalyan
nani kalyan 2015-5-21
no, i didnot get bro.
Andrei Bobrov
Andrei Bobrov 2015-5-21
a = [92.5,95.2,95.8,95.9]';
x = randi(225,15,1);
[~,ii] = histc(x,[0,57,113,169,225]);
out = x.*a(ii);
  2 个评论
nani kalyan
nani kalyan 2015-5-21
For the column 3, i need to check those conditions. so, i need the program for that.
Walter Roberson
Walter Roberson 2015-5-21
Use xlsread() to read column 3 of the file, and assign the values to x.
Image Analyst
Image Analyst 2015-5-21
Here's another approach that does what (I think) you said :
% Make up some sample data
numElements = 100;
maxValue = 200; % Whatever
% Create sample data.
data = maxValue * rand(1, numElements);
% 0-56 it should multiply with 92.5,
% 57-112 it should multiply with 95.2,
% 113-168 it should multiply with 95.8,
% 169-225 it should multiply with 95.9.
% Do the algorithm.
% 0-56 it should multiply with 92.5,
logicalVector = data >= 0 & data < 56;
data(logicalVector) = data(logicalVector) * 92.5;
% 57-112 it should multiply with 95.2,
logicalVector = data >= 57 & data < 112;
data(logicalVector) = data(logicalVector) * 95.2;
% 113-168 it should multiply with 95.8,
logicalVector = data >= 113 & data < 168;
data(logicalVector) = data(logicalVector) * 95.8;
% 169-225 it should multiply with 95.9.
logicalVector = data >= 169 & data < 225;
data(logicalVector) = data(logicalVector) * 95.9;
Note that if your data is floating point, there are some gaps in your ranges, like values between 56 and 57 don't get multiplied by anything. However if you just have integers, that's not a problem

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