allow hubflow.core.ClassDefinition to use none-zero based classification scheme

[Benjamin Jakimow]

hubflow.core.ClassDefinition

assumes classes are labeled starting from zero (like assumed by GDAL), e.g. 1st class is labeled with raster value = 1, 2nd class value = 2 and so on.

It would be nice to allow for class definitions with explicite labels, similar to the QGIS Paletted raster renderer or the QPS widget to define a ClassificationScheme:

‌

[Andreas Janz]

You can now use the ids keyword to autofill the inbetween classes:

classDefinitionNewStyle = ClassDefinition(classes=55,
    names=['11', '12', '13', '14', '15', '21', '22', '23', '24', '25', '31', '32', '33', '34', '35', '41', '42', '43',
           '44', '45', '51', '52', '53', '54', '55'],
    colors=[Color('#1d6318'), Color('#00ff88'), Color('#efb700'), Color('#e20003'), Color('#02f3ff'), Color('#e6df49'),
            Color('#35b646'), Color('#efb700'), Color('#da0003'), Color('#02f3ff'), Color('#d12ea6'), Color('#00ff88'),
            Color('#d0c264'), Color('#ed0003'), Color('#02f3ff'), Color('#79d2b2'), Color('#00ff88'), Color('#efb700'),
            Color('#ea747b'), Color('#02f3ff'), Color('#d23f3f'), Color('#00ff88'), Color('#efb700'), Color('#d70003'),
            Color('#57d4d2')],
    ids=[11, 12, 13, 14, 15, 21, 22, 23, 24, 25, 31, 32, 33, 34, 35, 41, 42, 43, 44, 45, 51, 52, 53, 54, 55]
)

results in:

ClassDefinition(
    classes=55, 
    names=['Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', '11', '12', '13', '14', '15', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', '21', '22', '23', '24', '25', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', '31', '32', '33', '34', '35', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', '41', '42', '43', '44', '45', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', 'Unclassified', '51', '52', '53', '54', '55'], 
    colors=[Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#1d6318')), Color(Color('#00ff88')), Color(Color('#efb700')), Color(Color('#e20003')), Color(Color('#02f3ff')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#e6df49')), Color(Color('#35b646')), Color(Color('#efb700')), Color(Color('#da0003')), Color(Color('#02f3ff')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#d12ea6')), Color(Color('#00ff88')), Color(Color('#d0c264')), Color(Color('#ed0003')), Color(Color('#02f3ff')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#79d2b2')), Color(Color('#00ff88')), Color(Color('#efb700')), Color(Color('#ea747b')), Color(Color('#02f3ff')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#000000')), Color(Color('#d23f3f')), Color(Color('#00ff88')), Color(Color('#efb700')), Color(Color('#d70003')), Color(Color('#57d4d2'))]
)

‌

[Andreas Janz]

resolves #508

→ <<cset ef32c8b00aad>>