Say for example, if there's a point data with old trees, then when you use the identify tool, you can see the photograph of the tree
Or even one level further, the labels displaying these images right away without any clicking needed
I believe the term is file streaming?
Answer
Can be done on identification.
You first need an attribute with the photo paths. Must be full path:
Then you set the widget of the attribute to Photo, through the image properties:
When you identify a feature, it will pop up an image:
Although you need to have "Auto open form" ticked on in the identify results, also it must only be identifying the layer with images, so the mode should be "Current Selection" so it will identify the layer selected in the layers panel:
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