asked on # How to plot graphs in Python

plot where y = x**2 for x over the interval 1 to 5, properly labelled

Create a histogram where the mean = 0, std. dev. = 1, n = 300, and there are sqrt(n) bins

Create a line plot of your choosing with an appropriate legend which displays the formula of the curve depicted.

The formula should be formatted using TeX syntax to create a professional presentation.

Create a histogram where the mean = 0, std. dev. = 1, n = 300, and there are sqrt(n) bins

Create a line plot of your choosing with an appropriate legend which displays the formula of the curve depicted.

The formula should be formatted using TeX syntax to create a professional presentation.

Python

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x_vals = (1, 2, 3, 4, 5)

y_vals = (x_vals**2)

plt.plot(x_vals, y_vals)

plt.xlabel("my x label")

plt.ylabel("my y label")

plt.legend(("$y=x^2$",))

plt.show()

TypeError Traceback (most recent call last)

<ipython-input-27-b734c71068e0> in <module>()

6

7 x_vals = (1, 2, 3, 4, 5)

----> 8 y_vals = (x_vals**2)

9

10 plt.plot(x_vals, y_vals)

TypeError: unsupported operand type(s) for ** or pow(): 'tuple' and 'int'

I dont get why this is showing as an error?

y_vals = (x_vals**2)

plt.plot(x_vals, y_vals)

plt.xlabel("my x label")

plt.ylabel("my y label")

plt.legend(("$y=x^2$",))

plt.show()

TypeError Traceback (most recent call last)

<ipython-input-27-b734c710

6

7 x_vals = (1, 2, 3, 4, 5)

----> 8 y_vals = (x_vals**2)

9

10 plt.plot(x_vals, y_vals)

TypeError: unsupported operand type(s) for ** or pow(): 'tuple' and 'int'

I dont get why this is showing as an error?

`x_vals = (1, 2, 3, 4, 5)` is a tuple. You can't raise a tuple to a power, so you get an error.

On the other hand `x = linspace(1, 5, 1)` is an `ndarray`, and by using `x**2` you raise each element of `x` to the power of 2.

On the other hand `x = linspace(1, 5, 1)` is an `ndarray`, and by using `x**2` you raise each element of `x` to the power of 2.

Still getting an error

import matplotlib.patches as mpatches

import matplotlib.pyplot as plt

from numpy import linspace

%matplotlib inline

x_vals = linspace(1, 2, 3, 4, 5)

y_vals = x_vals**2

plt.plot(x_vals, y_vals)

plt.xlabel("my x label")

plt.ylabel("my y label")

plt.legend(("$y=x^2$",))

plt.show()

---------------------------------------------------------------------------

TypeError Traceback (most recent call last)

<ipython-input-4-0c9e1253f2b1> in <module>()

6

7

----> 8 x_vals = linspace[1, 2, 3, 4, 5]

9 y_vals = x_vals**2

10

TypeError: 'function' object is not subscriptable

import matplotlib.patches as mpatches

import matplotlib.pyplot as plt

from numpy import linspace

%matplotlib inline

x_vals = linspace(1, 2, 3, 4, 5)

y_vals = x_vals**2

plt.plot(x_vals, y_vals)

plt.xlabel("my x label")

plt.ylabel("my y label")

plt.legend(("$y=x^2$",))

plt.show()

--------------------------

TypeError Traceback (most recent call last)

<ipython-input-4-0c9e1253f

6

7

----> 8 x_vals = linspace[1, 2, 3, 4, 5]

9 y_vals = x_vals**2

10

TypeError: 'function' object is not subscriptable

`linspace` needs start and stop as first and second argument respectively. Optionally you can provide other arguments. Check the link for more details.

Also you should be using parenthesis since linspace is a function and needs a parenthesis to be called: `x = linspace(1, 5, 50)`

Also you should be using parenthesis since linspace is a function and needs a parenthesis to be called: `x = linspace(1, 5, 50)`

ahhh got it. Thank you so much!!

Thank you so much I understand now

TypeError Traceback (most recent call last)

<ipython-input-27-b734c710

6

7 x_vals = (1, 2, 3, 4, 5)

----> 8 y_vals = (x_vals**2)

9

10 plt.plot(x_vals, y_vals)

TypeError: unsupported operand type(s) for ** or pow(): 'tuple' and 'int'

I dont get why this is showing as an error?