Mar 27, 2015 · A few things: 1) Python does not have the 2D, f[i,j], index notation, but to get that you can use numpy. Picking a arbitrary index pair from your example: import numpy as np f = np.array(data) print f[1,2] # 6 print data[1][2] # 6 2) Then for the plot you can do: plt.imshow(f, interpolation="nearest", origin="upper") plt.colorbar() plt.show() So here you have representative colors where you ...

May 11, 2013 · Here is the simplest example that has the key lines of code: import numpy as np import matplotlib.pyplot as plt H = np.array([[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11 ...

Jan 23, 2016 · I have a 2D numpy array that's created like this: data = np.empty((number_of_elements, 7)) Each row with 7 (or whatever) floats represents an object's properties. The first two for example are the x and y position of the object, the others are various properties that could even be used to apply color information to the plot.

Feb 23, 2021 · Assuming that the array is X: import matplotlib.pyplot as plt plt.scatter(X[:, 0], X[:, 1]) plt.show() plt.scatter() has many addional options, see the documentation for details. Answer to the updated question: It seems that you have an outlier row in the array with the first coordinate close to 2.5*10^6 (which gives the point close to the right margin of …

Using Matplotlib, I want to plot a 2D heat map. My data is an n-by-n Numpy array, each with a value between 0 and 1. So for the (i, j) element of this array, I want to plot a square at the (i, j)

Jan 28, 2016 · The np.array that results from this loop has 4383 rows and 6 columns. I have tried without success to use pylab.imshow() from matplotlib (pylab) to display the array. The objective is to creat an image of the array, in wich the colors gradient represent the magnitude of …

May 28, 2015 · I am trying to plot 2D field data using matplotlib. So basically I want something similar to this: In my actual case I have data stored in a file on my harddrive. However for simplicity consider the function z = f (x, y). I want a smooth 2D plot where z is visualised using color. I managed the plotting with the following lines of code: import ...

Mar 27, 2014 · I have a 2D numpy array and I want to plot it in 3D. I heard about mplot3d but I cant get to work properly Here's an example of what I want to do. I have an array with the dimensions (256,1024).

Nov 5, 2012 · Well, basically I want to know the difference in behaviour of those two methods. I stared at the plot for a while and found one grid line that had a distinctive shape. By plotting it, I was able to distinguish what method 1 does. Basically, my method 1 literally plotted my array as I wanted it. The rows correspond to the X axis, and the columns correspond to the Y axis. If …

Feb 14, 2017 · I follow this links How to append many numpy files into one numpy file in python to put all my numpy files in one file. Now, I need to plot my file which contains many arrays, each array contain ...