[read_csv] support File object in browser about danfojs HOT 6 CLOSED

I think I understand the double download issue now. First download happened at

const column_names = await csvDataset.columnNames()

Then second:

await sample.forEachAsync(row => data.push(Object.values(row)))

Doesn't look very optimized.

from danfojs.

Thanks for noticing this. We are planning to change the underlying functions for reading CSV files. Currently we are using tfjs read csv function. The latest ode version introduces a generic read function for reading many tabular files. Although still in testing, we will definitely fix this in the next couple of days

from danfojs.

Stale issue message

from danfojs.

Any updates on this? I would love to have File object support for read_csv, especially for browsers. Selecting files using the <input ... tag returns File objects, but the read_csv currently only takes in a filePath, which doesn't make much sense for browsers. This requires the file to first be uploaded somewhere in the cloud before being able to use it for Danfo, making this feature unusable for offline web apps.

Furthermore, PapaParse already supports parsing .csv files from File objects, as documented here, so the fix for this should be fairly easy to implement.

from danfojs.

Any updates on this? I would love to have File object support for read_csv, especially for browsers. Selecting files using the <input ... tag returns File objects, but the read_csv currently only takes in a filePath, which doesn't make much sense for browsers. This requires the file to first be uploaded somewhere in the cloud before being able to use it for Danfo, making this feature unusable for offline web apps.

Furthermore, PapaParse already supports parsing .csv files from File objects, as documented here, so the fix for this should be fairly easy to implement.

Hey @Devwulf , the latest version of Danfojs supports file object. See https://danfo.jsdata.org/api-reference/input-output/danfo.read_csv

from danfojs.

Hey @Devwulf , the latest version of Danfojs supports file object. See https://danfo.jsdata.org/api-reference/input-output/danfo.read_csv

That's weird. I do have the latest version of Danfojs from npm, which is currently 0.3.3. Is that not the latest version?

Edit: I'm looking at the latest danfojs-browser source code too, the readCSV only supports filePath there: https://github.com/opensource9ja/danfojs/blob/146ba82ca723527f5c2008b5077c6a13d196e01f/danfojs-browser/src/io/io.csv.js

from danfojs.