CODEWITHSUNDEEP
pythonmatplotlibplot
mcrouch
mcrouch

Reputation: 41

Matplotlib giving no error but not plotting anything

so this a section of my code, it runs and opens a graph but there is no plot points

fig =plt.figure(1)
data= [1.3,2.4]
for i in range(0,2):
    emittx=data[i];
    turns = 1+i;
    plt.plot(turns,emittx,'-r')
plt.show()

stuck because I cant really understand why

Upvotes: 2

Views: 2315

Answers (1)

Hamid
Hamid

Reputation: 1385

As was stated in the comments, the problem is because you are repeatedly (for loop) plotting a SINGLE point and asking matplotlib to use a line ('-') to connect the single point.

Either plot an array of two or more points (e.g. [2.3, 4.4]) or use markers to represent the data ('o'). For example:

fig =plt.figure(1)
data = [1.3,2.4]
for i in range(0,2):
    emittx=data[i];
    turns = 1+i;
    plt.plot(turns,emittx,'or', markersize=10)
plt.show()

should allow you to plot single points.

Upvotes: 2

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