Make a plot

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Contributors

Feedback

From users who are members of Demos :

Christian Lawson-Perfect

said

Ready to use

3 years, 1 month ago

From users who are not members of Demos :

Simon Vaughan

said

Ready to use

1 year, 1 month ago

History

○

Simon Vaughan 1 year, 1 month ago

Gave some feedback: Ready to use

○

Simon Vaughan 1 year, 1 month ago

Gave some feedback: Has some problems

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Chris Graham commented 1 year, 9 months ago

The marking algorithm used code_result[3]["stdout"], which is now code_result[4]["stdout"]

○

Christian Lawson-Perfect 2 years, 7 months ago

Saved a checkpoint:

Removed the JS preamble to load svglite: it looks like webR can do that on its own now.

Restore this checkpoint

○

Christian Lawson-Perfect 3 years, 1 month ago

Published this.

○

Christian Lawson-Perfect 3 years, 1 month ago

Gave some feedback: Ready to use

○

Christian Lawson-Perfect 3 years, 1 month ago

Created this as a copy of Make a plot.

Name	Status	Author	Last Modified
Make a plot	draft	George Stagg	13/09/2024 11:05
Make a plot with matplotlib	draft	Christian Lawson-Perfect	10/05/2023 13:31
Make a plot with matplotlib	Ready to use	Christian Lawson-Perfect	23/11/2023 11:37
Make a plot	Ready to use	Christian Lawson-Perfect	24/07/2024 10:28
Plotting a parametric surface with Python	draft	Toby Wood	03/04/2024 14:59

There are 21 other versions that do you not have access to.

Question statement

Give any introductory information the student needs.

			Name	Type	Generated Value

write_file_example

string

txt <- "Hello World" writeLine

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
txt <- "Hello World"
writeLines(txt, "thing.txt")

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `string`

txt <- "Hello World" writeLines(txt, "thing.txt")

This variable doesn't seem to be used anywhere.

Parts

Make a plot in R Code

Code

Ask the student a question, and give any hints about how they should answer this part.

Write some R code to make a plot. Something like this should do the job:

{code_block("hist(rnorm(1000,10,1))", "r")}

Help with this part type

Marks

Show correct answer on reveal?

Show score feedback icon?

Show the input hint?

Code language

The language that the student's code will be written in.

Correct answer

​x
 
​

A correct answer to the part.

Substitute question variables into the correct answer?

If ticked, then JME expressions between curly braces will be evaluated and substituted into the correct answer.

If not ticked, then the correct answer will be displayed exactly as it is.

Show stdout?

If ticked, the STDOUT produced after running the student's code will be shown in the feedback.

Show stderr?

If ticked, the STDERR produced after running the student's code will be shown in the feedback.

Show errors produced by marking tests?

Placeholder

​

Initial text for the code editor

Student code modifier

​

JME expression to modify the student's submitted code before being passed to the marking template. The student's code is available as the string variable studentAnswer.

Preamble

xxxxxxxxxx
 
install.packages("svglite")
library(svglite)
svg()

This code is run before the student's code. Define anything that the student's code or your tests need.

Postamble

xxxxxxxxxx
 
dev_result <- dev.off() # dev.off() returns some info that we don't care about, so it's assigned to a variable to prevent it from being printed out

This code is run after the student's code but before the validation and unit tests.

Format postamble output as code?

If ticked, any output produced by the postamble will be formatted in monospace font, with whitespace preserved. If not ticked, it'll be presented as prose text or HTML.

Marking tests

xxxxxxxxxx
 
[
​
]

A list of tests used to mark the student's answer.
Each item is a list with three values:

The name of the test, shown to the student above any feedback.
The proportion of the credit available for the part to award if this test is passed.
The code to run.

Validation tests

xxxxxxxxxx
 
[
  
]

A list of tests used to validate that the student's code is acceptable.
Each item is a list with two string values:

A name which will be shown to the student if the test fails.
The code to run.

Variables to include in code

xxxxxxxxxx
 
dict()

Give a dictionary mapping variable names to their values. These variables will be available in the code that is run.

Advice

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Code
Code		Hasn't run yet

This question is used in the following exams:

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Simon Vaughan 1 year, 1 month ago

Simon Vaughan 1 year, 1 month ago

Chris Graham commented 1 year, 9 months ago

Christian Lawson-Perfect 2 years, 7 months ago

Christian Lawson-Perfect 3 years, 1 month ago

Christian Lawson-Perfect 3 years, 1 month ago

Christian Lawson-Perfect 3 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: `string`

Parts

Code

Loading...

Error

Make a plot

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Simon Vaughan 1 year, 1 month ago

Simon Vaughan 1 year, 1 month ago

Chris Graham commented 1 year, 9 months ago

Christian Lawson-Perfect 2 years, 7 months ago

Christian Lawson-Perfect 3 years, 1 month ago

Christian Lawson-Perfect 3 years, 1 month ago

Christian Lawson-Perfect 3 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: string

Parts

Code

Generated value: `string`