Rescale values based on a particular value
显示 更早的评论
Hi,
I have a .csv file with ~200k values. I want to rescale the values to range -1 to +1. I know the rescale function can do this.
However, what I want to do is, I want the scaling to happen based on the max and min range that I provide and not the max and min values in the file itself. To give an example: the file contains values ranging from 2500-2800. I want to rescale it from -1 to +1 but -1 should correspond to 2300 and +1 should correspond to 3000.
How can I do it? I don't think rescale function provides this functionality. Is there any function for it? I have attached my file.
Thanks, Gagan
采纳的回答
Try the following:
data = readmatrix('https://www.mathworks.com/matlabcentral/answers/uploaded_files/925044/w3.csv');
rescale_data = rescale(data,-1,1,'InputMin',2300,'InputMax',3000);
subplot(2,1,1);
plot(data);
ylim([2300 3000]);
subplot(2,1,2);
plot(rescale_data);
5 个评论
Giggs B.
2022-3-13
Simon Chan
2022-3-13
I am sorry I am not an expert on audio signal.
I guess it is kind of resolution issue where rescale helps to improve it. (Guess only!)
You may refer to other websites (such as the following) for detail explanation or open another question to see someone can give you a better answer.
Giggs B.
2022-3-13
Image Analyst
2022-3-13
Maybe try soundsc() which scales audio so you can hear it.
Giggs B.
2022-3-14
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Standard File Formats 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
