Overlay point value on httpimage patch
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In case anyone is interested, here is a patch which allows you to overlay a point value on an httpimage.
For example an image of a water level over a weir or flume could have the reading recorded by a pressure transducer overlayed on top.
Attachment: download link
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updated patch against mango 1.12.4.
the filedata one places the files in dated directories of the format YYYY/YYYY-MM-DD so I don't have thousands of images in a single directory in 10 years
Attachment: download link