Hot to take the first data values out and then plot all of data

1 次查看（过去 30 天）
m j
m j 2016-7-11
评论： Star Strider 2016-7-12
So each sample I take has 406 csv's. And I would like to leave the first six values out of the sample and then plot, just without those first 6 values. New to matlab. Any ideas?
Thanks

请先登录，再回答此问题。

回答（2 个）

Star Strider
Star Strider 2016-7-11
There are at least three ways to deal with that, depending on the function you’re using to read your .csv files.
  1. Define the range of values to read in xlsread and csvread (see the respective function documentation),
  2. Define 'HeaderLines',6 in textscan,
  3. Read in everything and then delete the first 6 rows, regardless of the function you use to import them.
  6 个评论
显示 4更早的评论
m j
m j 2016-7-12
perfect but I am having trouble figuring out this line.
'%*f%*f%*f%*f%*f%*f' repmat('%f', 1, 400)] so you create a string of 6 floats and then call repmat and have the first 6 floats be transferred into the 6 '%*f%*f%*f%*f%*f%*f' string?
Star Strider
Star Strider 2016-7-12
Thank you.
The entire format descriptor is:
['%*f%*f%*f%*f%*f%*f' repmat('%f', 1, 400)]
In MATLAB, the square brackets when applied to strings act as a concatenation operator, here forming one string of all the elements within the brackets. The first six fields are ‘%*f’, with the asterisk telling MATLAB to ignore each of those fields. The repmat call avoids my having to type ‘%f’ 400 times to read in the 400 following values. (I could have use a repmat call for the first six fields as well, but considered that to be sort of ‘overkill’.)

请先登录，再进行评论。

Walter Roberson
Walter Roberson 2016-7-12
YourData([1:406:end, 2:406:end, 3:406:end, 4:406:end, 5:406:end, 6:406:end], :) = [];

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by