Bar plot is plotting negative x-values in array, despite no negative values in array

Question

I'm getting this bug where, when plotting two arrays, I have negative x-values, despite there not being any negative values in my x-axis array. My x-axis should range from my minimum 0.005 to my max 0.995. There shouldn't be any values defined outside this range. Why am I getting I'm not sure why this is happening?

print(xValsAppx)
print()
print(probabilityX)

plt.bar(xValsAppx, probabilityX)
plt.xlabel('Sample')
plt.ylabel('Probability of Observing the Sample')
plt.title('Normal Distribution for a = 0, b = 1')

where xValsAppx is

[0.005 0.015 0.025 0.035 0.045 0.055 0.065 0.075 0.085 0.095 0.105 0.115
0.125 0.135 0.145 0.155 0.165 0.175 0.185 0.195 0.205 0.215 0.225 0.235
0.245 0.255 0.265 0.275 0.285 0.295 0.305 0.315 0.325 0.335 0.345 0.355
0.365 0.375 0.385 0.395 0.405 0.415 0.425 0.435 0.445 0.455 0.465 0.475
0.485 0.495 0.505 0.515 0.525 0.535 0.545 0.555 0.565 0.575 0.585 0.595
0.605 0.615 0.625 0.635 0.645 0.655 0.665 0.675 0.685 0.695 0.705 0.715
0.725 0.735 0.745 0.755 0.765 0.775 0.785 0.795 0.805 0.815 0.825 0.835
0.845 0.855 0.865 0.875 0.885 0.895 0.905 0.915 0.925 0.935 0.945 0.955
0.965 0.975 0.985 0.995]

and probabilityX is

[0.00977, 0.00995, 0.00999, 0.0, 0.00966, 0.01022, 0.01027, 0.01023, 0.0, 
0.01046, 0.01008, 0.0, 0.00967, 0.0096, 0.0102, 0.01008, 0.00977, 0.0, 
0.00961, 0.01003, 0.0095, 0.00944, 0.0106, 0.0, 0.0099, 0.0097,
0.01001,0.01017, 0.01014, 0.00977, 0.00998, 0.01013, 0.00978, 0.01017,
0.00939, 0.0, 0.00965, 0.0099, 0.01, 0.00973, 0.01009, 0.00968, 0.01003,
0.01009, 0.01022, 0.01022, 0.01022, 0.0, 0.01013, 0.00997, 0.00938, 0.0103,
0.00998, 0.00966, 0.01034, 0.00989, 0.0094, 0.0, 0.01071, 0.01065, 0.00945,
0.0098, 0.00997, 0.01, 0.0099, 0.01002, 0.00945, 0.00974, 0.01028, 0.01013,
0.01041, 0.00997, 0.01049, 0.0094, 0.00991, 0.00997, 0.01036, 0.01036,
0.00994, 0.01024, 0.01044, 0.01068, 0.00992, 0.0, 0.00996, 0.00955, 0.01014,
0.00991, 0.00977, 0.01013, 0.00989, 0.01027, 0.01037, 0.01016, 0.00957,
0.01001, 0.01004, 0.01054, 0.00946, 0.01005]

Image here:

please put you code as text, rather than as a figure.

warped
– warped

2019-05-13 06:13:57 +00:00
Commented May 13, 2019 at 6:13 — warped
– warped, Commented May 13, 2019 at 6:13
please share your minimal code as well as your data too.

Rheatey Bash
– Rheatey Bash

2019-05-13 06:17:57 +00:00
Commented May 13, 2019 at 6:17 — Rheatey Bash
– Rheatey Bash, Commented May 13, 2019 at 6:17

SpghttCd · Accepted Answer · 2019-05-13 06:54:55Z

1

Looking at the docs, the default width of the bars is 0.8, which doesn't fit to your x values. Try e.g 0.008 or 0.01.

plt.bar(xValsAppx, probabilityX, 0.008)

edited May 13, 2019 at 6:54

answered May 13, 2019 at 6:46

SpghttCd

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