not be able to query data after reading from csv

[samiragol]

I am reading data from a csv file. I want to query data with a very simple statement:

dfd.read_csv(dataPath)
.then(df => {
  let query_df = df.query({ column: "A", is: "==", to: "foo"});
  query_df.print();
})

it gives me this error: ReferenceError: bar is not defined and "bar" is one of the values in column "A"

[JhennerTigreros]

Can you provide some rows of example from csv?

[samiragol]

I used the same example in your github.

let data = { "Abs": [20, 30, 47] ,
            "Count": [34, 4, 5] ,
            "country code": ["NG", "FR", "GH"] }

[JhennerTigreros]

Yes, the problem is in eval function that is used in frame.js

if (eval(`${elem}${operator}${value}`)) {
  new_data.push(data_value);
  new_index.push(index[i]);
}

becase eval function resolve the string to NG==NG and the engine try to get the variable NG that doesn't exits, I fix this changing the snippet code to

if (eval(`elem${operator}value`)) {
  new_data.push(data_value);
  new_index.push(index[i]);
}

and get the correct output

change it locally while fixing on main branch, the file is in /danfojs-node/dist/core/frame.js

[samiragol]

thanks, is it going to be in the next release?

[JhennerTigreros]

I open a pull request with the fix :)

[risenW]

@JhennerTigreros
Thanks for the fix. Will take a look and merge.

[risenW]

Merged! Thanks folks

[fredthedead]

I'm using the version suggested in the repository README.md file
<script src="https://cdn.jsdelivr.net/npm/danfojs@0.1.2/dist/index.min.js"></script>
and still getting this error... is this version the latest or is there a new one?