python : AttributeError: 'Polygon' object has no attribute 'value'

Question

I am trying to extract the values associated to each pixel in a tiff image using the gdal library.

 # Create a polygon from the pixel coordinates
            polygon = Polygon([(x_min, y_min), (x_min, y_max), (x_max, y_max), (x_max, y_min)])

 # Associate the polygon with the value
            polygon.value = value

When I try to access the value of the polygon I got the error

AttributeError: 'Polygon' object has no attribute 'value'

Please provide a Minimal, Reproducible Example. What is Polygon? — Yevhen Kuzmovych
– Yevhen Kuzmovych, Commented Jun 7, 2023 at 11:13
Please edit the question and put all relevant information into this instead of writing a new comment. But it is still unclear where this value attribute come from!? — colidyre
– colidyre, Commented Jun 7, 2023 at 17:18
I imported the polygon object from the shapely.geometry library. It is supposed to represent the shape of the field that I wnt to extract. — ro_55
– ro_55, Commented Jun 8, 2023 at 10:54

ro_55 · Accepted Answer · 2023-06-08 11:03:19Z

0

After many tries, I discovered that the polygon object do not really have the value attribute ( it only have two attributes : 'exterior' which is the ring which bounds the positive space of the polygon and 'interiors' which is a sequence of rings which bound all existing holes.), so I decided to change the logic that I am working with.

polygon = Polygon([(x, y), (x+1, y), (x+1, y+1), (x, y+1)])
value = int(array[y, x])  # Convert pixel value to int

This code works perfectly well for my use case.

answered Jun 8, 2023 at 11:03

ro_55

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