Plotting matrices and generating random integers - MATLAB

I was interested in plotting a matrix vs matrix in MATLAB. At first, I though that using plot(matrix1, matrix2) would plot each row from each matrix against each other. I then tried using a for loop where I looped over each row in order to plot all rows(also had to use "hold on"). I learned my lesson when I looked at documentation for plot(), which stated that when plotting matrices, the columns of each matrix were plotted against each other. So I had to use plot(matrix1', matrix2'). 

I also had was interested in plotting random rows from the matrices, rather than all of the data from the matrices. I found that randi() would allow me to achieve this, as it can generate a vector of random integers given a specific range. Then I could just use plot(matrix1(genvector, :), matrix2(genvector, :)) to obtain the plot with random rows from each of the matrices. 

It was nice getting back into MATLAB after some time. I hope to continue practicing MATLAB, in addition to Python, as it will be useful for plotting figures for research during graduate school. 

Comments

Post a Comment

Popular posts from this blog

subplot() vs tiledlayout() - MATLAB

 I learned about tiledlayout() earlier this year. I was exporting figures from MATLAB as svg files and importing them into Inkscape. I found that there was a lot of unnecessary space between the plots and around them within the figures. tiledlayout() allowed me to remove this unnecessary space.  When I was making figures, I had data that needed a for loop. I found out that if I wanted to use a specific layout(dim x dim), I had to define one for each iteration. There are still some ways to edit a figure that I need to review, but I hope to continue using tiledlayout() over subplot(). 
Read more

Modifying PDF contrast with Inkscape

 I had to submit a form to my school to verify my enrollment to another person. In order to do so, I had to scan the form first and then email it. But rather than use my printer's scanner, I decided to use my phone to scan the document as it was faster. Unfortunately the contrast of the pdf was not the best. I tried adjusting it by changing it to "Greyscale" or "Black and White" after I had scanned it on my phone through the notes app, but it still was not good enough.  Because I've been using Inkscape, I wondered whether I could use it to change the contrast of the pdf. After importing it, I used the "Filters" tab, and after some searching, I found that "Greyscale..." under the "Color" option would achieve what I wanted. I found that by using "Lightness", I could change the contrast of the page. I will probably use this again as I don't have a subscription with Adobe Acrobat Reader to edit my PDF files. But I migh...
Read more

Making a website with a blog? Not sure yet

Using freeCodeCamp's Response Web Design track, I was able to learn enough to get a certification and make a website. I have learned so far that a website made with only HTML and CSS is considered static. I would like to learn more to see how to make a website dynamic, though the definition of dynamic is still not quite clear to me.  Here are some of the questions I had when thinking about how to include a blog within my static website: Can I use iframe tag to include a blog post, made as a text file, within an html/css site?  Can I use JavaScript to make dynamic website? How would I add a navigation bar so that one could go to different posts> In addition to the question above, how do I make it so each blog post isn't its own css-styled html file? If each blog post is its own css-styled html file, then I'll have to edit each one whenever I make a new blog post in order to add link to new blog post? Hopefully I'll be able to learn more to properly understand how a dy...
Read more