contour plots in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a contour plot of matrix Z.

MATLAB

contour([1]);

Drag options to blanks, or click blank then click option'

Amesh

Bplot

CZ

Dsurf

Attempts:

3 left

💡 Hint

Common Mistakes

Using plot instead of contour.

Using mesh or surf which create 3D plots.

The contour function creates contour plots of the matrix Z.

2fill in blank

medium

Complete the code to generate X and Y grid matrices for contour plotting.

MATLAB

[X, Y] = meshgrid([1], [2]);

Drag options to blanks, or click blank then click option'

Acontour

BZ

CY

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Passing matrix Z instead of vector x.

Using contour or Y as input which are not vectors.

The meshgrid function creates grid matrices from vector x for X and Y.

3fill in blank

hard

Fix the error in the code to plot contour lines with 10 levels.

MATLAB

contour(X, Y, Z, [1]);

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A10

B5

C'10'

D[10]

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around 10 making it a string.

Using brackets which create an array.

The number of contour levels should be a numeric scalar, so use 10 without quotes or brackets.

4fill in blank

hard

Fill both blanks to create a contour plot with labeled contour lines.

MATLAB

C = contour(X, Y, Z, [1]);
clabel([2]);

Drag options to blanks, or click blank then click option'

A20

BZ

CC

DX

Attempts:

3 left

💡 Hint

Common Mistakes

Using the data matrix Z instead of the contour matrix C for labeling.

Not specifying the number of contour levels.

Use 20 contour levels and label the contour matrix C returned by contour.

5fill in blank

hard

Fill all three blanks to create a filled contour plot with a colorbar and title.

MATLAB

contourf(X, Y, Z, [1]);
colorbar([2]);
title([3]);

Drag options to blanks, or click blank then click option'

A15

B'eastoutside'

C'My Contour Plot'

D'north'

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect colorbar location strings.

Not quoting the title string.

Use 15 contour levels, place the colorbar outside on the east, and add a descriptive title.