Plot two vectors in python
I am taking a course on linear algebra and I want to visualize the vectors in action, such as vector addition, normal vector, so on. Show For instance:
In this case I want to plot 3 vectors Then I should be able to add V1,V2 to plot a new vector V12(all together in one figure). when I use the following code, the plot is not as intended
user 5,1497 gold badges46 silver badges70 bronze badges asked Feb 16, 2017 at 18:30
1 How about something like
Then to add up any two vectors and plot them to the same figure, do so before you call
NOTE: in Python2 use
DSH 91013 silver badges24 bronze badges answered Feb 16, 2017 at 20:31
Aziz AltoAziz Alto 17.5k4 gold badges72 silver badges57 bronze badges 7
This may also be achieved using
answered Feb 16, 2017 at 19:44
fugledefuglede 16.4k2 gold badges54 silver badges89 bronze badges Your main problem is you create new figures in your loop, so each vector gets drawn on a different figure. Here's what I came up with, let me know if it's still not what you expect: CODE:
OUTPUT: EDIT CODE:
EDIT OUTPUT: answered Feb 16, 2017 at 19:03
mitoRibomitoRibo 4,0151 gold badge12 silver badges21 bronze badges 4 What did you expect the following to do?
This is making two different tuples, and you overwrite what you did the first time... Anyway,
Result: answered Feb 16, 2017 at 19:02
2 Thanks to everyone, each of your posts helped me a lot. rbierman code was pretty straight for my question, I have modified a bit and created a function to plot vectors from given arrays. I'd love to see any suggestions to improve it further.
Vector addition performed on random vectors answered Feb 17, 2017 at 5:49
Shravan KumarShravan Kumar 5351 gold badge4 silver badges9 bronze badges All nice solutions, borrowing and improvising for special case -> If you want to add a label near the arrowhead:
answered Jul 17, 2019 at 22:21
muonmuon 11.3k8 gold badges63 silver badges76 bronze badges In order to match the vector lenght and angle with the x,y coordinates of the plot, you can use to following options to plt.quiver:
answered Feb 27, 2021 at 20:41
Quiver is a good method once you figure out its annoying nuances, like not plotting vectors in their original scales. To do as far as I can tell you must pass these params to quiver call as many have pointed out: answered May 13, 2021 at 4:07
mr emr e 413 bronze badges How do you graph vectors in Python?Create a matrix of 2×3 dimension. Create an origin point, from where vecors could be originated. Plot a 3D fields of arrows using quiver() method with origin, data, colors and scale=15.
How do you plot a 2D vector in Python?MatPlotLib with Python. Create vector cordinates using numpy array.. Get x, y, u and v data points.. Create a new figure or activate an existing figure using figure method.. Get the current axis using gca() method.. Set x an y limits of the axes.. To redraw the current figure, use draw() method.. How do you plot two values in Python?Set the figure size and adjust the padding between and around the subplots.. Create random xs and ys data points using numpy.. Zip xs and ys. Iterate them together.. Make a scatter plot with each x and y values.. To display the figure, use show() method.. |