Syntax for make a row vector vs column

Question

Effie Miller 2019-3-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447961-syntax-for-make-a-row-vector-vs-column

回答： Walter Roberson 2019-3-3

Hi there, I've used Matlab for a couple years working primarily off of other people's scripts, but I'm finally trying to really learn the syntax myself to customize/improve these, and running into what I'm sure are very, very basic questions. In my current code I have two vectors of data that I normalize and create two new vectors from (with Norm appended to the front), and then I want to concatenate those two, normalized pieces of data, together.

I realized that it wasn't working within the current function I was using because the normalized vectors I am creating are column vectors, not row vectors. When I manually transpose the vectors prior to running the concatenate section of the program, it works fine. I suspect that because I am reading in the data from a text file that contains two columns of data, Matlab is automatically just making the vectors into columns as well.

My question is: How do I indicate when making a vector that I want it to be a column vs. row vector? OR is it better to just switch the type of vector after making it?

Here is the code I am using to read in the data and then normalize it

[B_X,Spc_XIntD_90sec] = textread ('BCintBCEKM092917_Xband_D2O_90sec_5K_9_639GHz_4096.txt','%f %f');
[Norm_Spc_XIntD_90sec] = Spc_XIntD_90sec/(max(Spc_XIntD_90sec) - min(Spc_XIntD_90sec));

Thanks for any help!