Add `bbox` parameter to @turf/interpolate

[stebogit]

Currently @turf/interpolate defines the area on which to interpolate the values as the bounding box surrounding the input points.
It would be useful to be able to define your area of interest, which might be different than the current (then default)bbox(points), like this:

or this:

[DenisCarriere]

We can pass the same options from the grid modules, I've added mask for each of them, that might work?

[stebogit]

Yep, mask would definitely work 👍

Now that I look at it we should also rename cellSize to cellSide as we did in the grid modules

Also, I was wondering why was clone introduced in here

var newFeature = clone(gridFeature);
newFeature.properties[property] = zw / sw;
results.push(newFeature);
...
return featureCollection(results);

[DenisCarriere]

Clone was used because it mutates the properties, I'm sure there might be a way to remove the clone.

newFeature.properties[property] = zw / sw;

[DenisCarriere]

• Change to cellSide 👍
• mask works 👍

[romick101]

Hello, is there any progress with mask parameter? Maybe I'm overlooking some other way to achieve custom interpolation boundary?

[iamtekson]

Is the mask parameter already implemented? I haven't seen that parameter in documentation.

EDIT: Even though the mask parameter is not mentioned in the documentation, it is there and working properly. But mask option doesn't seem like an option. For example, in below image, I am trying to interpolate 4 points within the polygon (pink background) but I got the values only for the bbox of the input points not for the whole polygon.

[smallsaucepan]

Hi @iamtekson. Could you please clarify if this is currently just a documentation issue ...

mask parameter [...] is there and working properly

or an actual problem with the result you get back from the function ...

but I got the values only for the bbox of the input points not for the whole polygon

Or both?

[smallsaucepan]

This will be resolved as part of #2444 so the user can pass an optional bbox.