Python-Matplotlib-保持轴平整和线性，并在网格上绘制点

Question

So, I've scoured the internet for a long time and come up with nothing.

Suppose I have this:

x = [35,86,34,55]
y = [11,84,73,26]

plt.plot(x,y)
plt.show()

This is a simplified version (without adding titles etc.)

I want to know how I can create a grid with points (not connected) at certain co-ordinates. Easy enough. But I would like the grid axes to be even. So, rather than the x-axis progressing as 35, 86, 34, 55, it would progress from 1 to 100 and those x-axis points would be plotted on the grid. I have tried the following:

plt.xlim()
# and
plt.axis('equal')

and I have come up with no results.

The resulting graph consists of a 45* line with and x- and y-axis non-linear. Any help would be extremely appreciated.

Thanks, Reece

Answer 1

It is not clear from your question and comments what your final figure should look like. Based on my interpretation of your words, you want the grid lines to pass through only the specified data points. To do so, you need to first set the x- and y-ticks at those coordinate positions and then turn the grid on.

x = [25,45,63,4]
y = [74,73,90,7]

plt.plot(x,y, 'ko')
plt.xlim(0, 100)
plt.xticks(x)
plt.yticks(y)
plt.grid()