how to make a plot bakcground image (annotation_custom) fit the full height and width of the plot ?

[Divin Sorcier]

Is there a way for an annotation_custom to match perfectly and automatically the width AND height of the plot ?

See provided file for a sample of the issue. The seine.png file does not match height. I would like ggplot to stretch the image.

[Sagar G]

Hi Divin, I was looking to solve the same problem, were able to figure how to fix this ? 

Thanks,

Sagar

[Crump, Ron]

Hi Sagar,

>Hi Divin, I was looking to solve the same problem, were able to figure
>how to fix this ?

I've had a very quick look at Divin's original example (which I've
attached in case anyone has deleted it) and I think I've got a simple
solution. Try replacing the call to annotation_custom(r) with:

annotation_raster(img,-Inf,Inf,-Inf,Inf,interpolate=TRUE)

I think that does it. On a superficial comparison with the seine.png
image, it looks right, but the alteration to the aspect ratio and
fuzziness makes it a bit harder to tell.

It also means you don't need to convert the image to a rastergrob either.

Ron.

[Sagar G]

Hi Ron, 

Thanks for replying, I was able to fix this.

I tried the same using: annotation_raster and yes, does not require you to convert image into rastergrob.

Once again thanks for your help !

Thanks,

Sagar

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Regards,

Sagar