matplotlib bar graph black – how do I remove bar borders
Set the edgecolor to “none”: bar(…, edgecolor = “none”)
graph
Python equivalent to ‘hold on’ in Matlab
Just call plt.show() at the end: import numpy as np import matplotlib.pyplot as plt plt.axis([0,50,60,80]) for i in np.arange(1,5): z = 68 + 4 * np.random.randn(50) zm = np.cumsum(z) / range(1,len(z)+1) plt.plot(zm) n = np.arange(1,51) su = 68 + 4 / np.sqrt(n) sl = 68 – 4 / np.sqrt(n) plt.plot(n,su,n,sl) plt.show()
Finding all cycles in undirected graphs
For an undirected graph the standard approach is to look for a so called cycle base : a set of simple cycles from which one can generate through combinations all other cycles. These are not necessarily all simple cycles in the graph. Consider for example the following graph: A / \ B —– C \ … Read more
What’s the difference between uniform-cost search and Dijkstra’s algorithm?
Dijkstra’s algorithm, which is perhaps better-known, can be regarded as a variant of uniform-cost search, where there is no goal state and processing continues until all nodes have been removed from the priority queue, i.e. until shortest paths to all nodes (not just a goal node) have been determined http://en.wikipedia.org/wiki/Uniform-cost_search#Relationship_to_other_algorithms
Comparing object graph representation to adjacency list and matrix representations
objects and pointers These are just basic datastructures like hammar said in the other answer, in Java you would represent this with classes like edges and vertices. For example an edge connects two vertices and can either be directed or undirected and it can contain a weight. A vertex can have an ID, name etc. … Read more
Choosing an attractive linear scale for a graph’s Y Axis
A long time ago I have written a graph module that covered this nicely. Digging in the grey mass gets the following: Determine lower and upper bound of the data. (Beware of the special case where lower bound = upper bound! Divide range into the required amount of ticks. Round the tick range up into … Read more
Relationship between dpi and figure size
Figure size (figsize) determines the size of the figure in inches. This gives the amount of space the axes (and other elements) have inside the figure. The default figure size is (6.4, 4.8) inches in matplotlib 2. A larger figure size will allow for longer texts, more axes or more ticklabels to be shown. Dots … Read more
matplotlib savefig() plots different from show()
savefig specifies the DPI for the saved figure (The default is 100 if it’s not specified in your .matplotlibrc, have a look at the dpi kwarg to savefig). It doesn’t inheret it from the DPI of the original figure. The DPI affects the relative size of the text and width of the stroke on lines, … Read more
Generate distinctly different RGB colors in graphs
You have three colour channels 0 to 255 R, G and B. First go through 0, 0, 255 0, 255, 0 255, 0, 0 Then go through 0, 255, 255 255, 0, 255 255, 255, 0 Then divide by 2 => 128 and start again: 0, 0, 128 0, 128, 0 128, 0, 0 0, … Read more
How to view GitHub Contributors Graph for branches other than master?
I just stumble on this as well. You can actually see the graphs for other branches than the Master branch. On Github in your repo – choose settings. In settings – change your default branch to whatever branch you would like to see the graphs for.