replicating histograpms in Photoshop

[wofsy]

Is there a way in Photoshop to replicate the histogram of a local area of an image? Suppose for instance that an image has some clouds and you would like to replicate the histogram of them to other clouds in the image. Say the clouds look voluiminous and slightly blue while the others look pink and flat.

[mouse]

Not sure what you mean by "replicate".
If you simply make a selection in PS, using any of the selection tools, the histogram panel will display a graph of that selection only.

[Ellis Vener]

The histogram is just a grapic representation of the numerical values of the color and tones  in the area selected.  You'll need to edit the data , probably by sampling the areas you want to copy and then painting them in in the areas you want to change to recreate the effect.

[francois]

I do believe that the OP, wofsy, would like to match (WB, exposure, saturation, etc…) two portions of two different images. He/she seems to think that one can accomplish this via an histogram.

I don't know any simple way to do that.