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Produce a ListPlot with Dataset

Ehud Behar
Posted 5 years ago
POSTED BY: Ehud Behar
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Ehud Behar
Ehud Behar
Posted 5 years ago

@ Neil Singer

and

@ Rohit Namjoshi,

Thanks very much indeed. Both your suggestions work.
POSTED BY: Ehud Behar

In addition to Rohit's suggestion, SemanticImport will import the data as a dataset:

ds = SemanticImport["~/Downloads/sample_file.csv"]
ds[ListPlot, {"t", "v"}]
POSTED BY: Neil Singer
Rohit Namjoshi
Rohit Namjoshi
Posted 5 years ago

Hi Ehud,

If the csv has a header row with column names then use this to Import as a Dataset.

ds = Import["~/Downloads/sample_file.csv", "Dataset", HeaderLines -> 1]

Notice that in this case the Dataset is rendered differently, the first row is a darker gray.

ds[ListPlot, {"t", "v"}]

Compare

InputForm@dataset
InputForm@ds
POSTED BY: Rohit Namjoshi
Ehud Behar
Ehud Behar
Posted 5 years ago

Hmmm... Thanks very much for you reply!

But, something isn't working for me.

I keep getting a "Failure" error - the one I wrote in the original post. Do you think it has something to do with the way I generate the csv file?

I am using Google Spreadsheet for this task, and the csv file is finely imported to the notebook.

I am also working on Mathematica 12.1 on Windows 7 64bit.

I wonder what I am missing here.

My notebook reads:

dataset = Import["filename.csv", "Dataset"]
dataset[ListPlot, {"t", "v"}]

I attached the sample .csv file to this post, if that could help.

Attachments:
sample_file.csv
POSTED BY: Ehud Behar

Ehud,

Do either

dataset[ListPlot, {"t", "v"}]

dataset[ListPlot, {#t, #v} &]

To get your plot.

Datasets are not lists but you can turn them into lists or some other format with the second example above (applying a function to the data). Look at the planet example or the titanic example in the help on Dataset.

Regards,

Neil
POSTED BY: Neil Singer
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