# Why the filters in paraview are in freeze form?
**URL:** https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577
**Category:** In Situ Support
**Tags:** python, vtk
**Created:** [March 2, 2021, 5:53am UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577 "2021-03-02T05:53:07Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@Pppp](https://discourse.paraview.org/u/Pppp)
#### Post date: [March 2, 2021, 5:53am UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/1 "2021-03-02T05:53:08Z")
I can’t use all the filters in Para view. When I upload my data only few filters seem unfreeze and operative.
 
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 2, 2021, 9:12am UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/2 "2021-03-02T09:12:39Z")
> [@I've just opened my dataset. I can't add filters, and everything is greyed out](https://discourse.paraview.org/t/ive-just-opened-my-dataset-i-cant-add-filters-and-everything-is-greyed-out/4511):
>
> Make sure your dataset is selected in the Pipeline Browser Click apply (in the Properties tab) if the apply button is green
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### Author:  [@danlipsa](https://discourse.paraview.org/u/danlipsa)
#### Post date: [March 2, 2021, 7:14pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/3 "2021-03-02T19:14:35Z")
Filters are also greyed out if they don’t have the input data they need. For instance, StreamTracer is grayed out if your data does not have a vector attribute.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 3, 2021, 8:14am UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/4 "2021-03-03T08:14:49Z")
Right, I missed this part 😉
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### Author:  [@Kaa](https://discourse.paraview.org/u/Kaa)
#### Post date: [March 24, 2021, 6:24pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/5 "2021-03-24T18:24:15Z")
Hi, I have the data file selected yet all filters are still grayed out. Any reason for this?
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### Author:  [@Kaa](https://discourse.paraview.org/u/Kaa)
#### Post date: [March 24, 2021, 6:35pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/6 "2021-03-24T18:35:26Z")
Selected a point and i can see the filters now. maybe it’s a bug or something.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 24, 2021, 6:41pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/7 "2021-03-24T18:41:40Z")
Press Apply.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 24, 2021, 6:41pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/8 "2021-03-24T18:41:44Z")
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 24, 2021, 6:42pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/9 "2021-03-24T18:42:04Z")
> [@I've just opened my dataset. I can't add filters, and everything is greyed out](https://discourse.paraview.org/t/ive-just-opened-my-dataset-i-cant-add-filters-and-everything-is-greyed-out/4511):
>
> Make sure your dataset is selected in the Pipeline Browser Click apply (in the Properties tab) if the apply button is green