Issue with JS API 4.11 ImageryLayer redraw()

MatthewLangley — Wed, 05 Jun 2019 01:08:32 GMT

Hi,

I've been using the Javascript 4.11 API and one of the primary use cases is to consume images from an ImageServer and perform client side filtering. This is a very similar use case in the v3 API sample (3), and has been previously implemented. The updated application is now using the Javascript 4.11 API and I found that the ImageryLayer redraw() function doesn't update the canvas with the newly filtered data (it does in fact run the pixelfilter). This has been causing quite a bit of grief as it is a core requirement and we also need to avoid caching of the images (as they're time enabled and update very often).

I've linked to a minimal example showing this issue in (1), just download the pastebin and open the html. It's based off the Javascript 4 pixelfilter example, but extended to match our use case and the v3 api's sample more closely.

I suspect either there is a simple fix to this I'm missing, or is it a bug in the API. Hopefully someone here can clarify.

1) Minimal Example showing issue

https://pastebin.com/Fs0WFWzd

2) Base Sample from Javascript API 4

https://developers.arcgis.com/javascript/latest/sample-code/layers-imagery-pixelvalues/index.html

3) Similar Use case in Javascript API 3

https://developers.arcgis.com/javascript/3/samples/layers_raster/

Thankyou in advance

Re: Issue with JS API 4.11 ImageryLayer redraw()

UndralBatsukh — Fri, 07 Jun 2019 18:54:05 GMT

Hi there,

We have verified that it is a bug in the API. Thank you for bringing this issue to our attention. We will get it fixed as soon as possible.

Thanks,

Re: Issue with JS API 4.11 ImageryLayer redraw()

UndralBatsukh — Tue, 18 Jun 2019 17:06:11 GMT

Hi there,

This issue will be fixed at JS API version 4.12 which will be released beginning of July.

Re: Issue with JS API 4.11 ImageryLayer redraw()

JohnGrayson — Sat, 11 Dec 2021 06:37:21 GMT

...for 4.11, this is the workaround I've previously used:

//layer.redraw();
 view.extent = view.extent;‍‍

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Issue with JS API 4.11 ImageryLayer redraw()

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Re: Issue with JS API 4.11 ImageryLayer redraw()

Re: Issue with JS API 4.11 ImageryLayer redraw()