.. _qzsolutions-cigreen: CIgreen Calculator ================== Block type: ``PROCESSING`` This block takes photos from an optical satellite and calculates Chlorophyll Index Green (*CIgreen*). It produces georeferenced single band GeoTIFF file with matrix containing CIgreen values. Such files can be manually colorized in `QGIS with singleband pseudocolor `_. It is possible to read CIgreen value for particular pixel with `Identify Features tool `_. .. _qzsolutions-cigreen.parameters: Supported parameters -------------------- * ``satellite`` - the name of the block providing input data. See section :ref:`qzsolutions-cigreen.supported_data_blocks` for valid values. Example parameters using ``Sentinel-2 Level 2 (BOA) AOI clipped`` block as data source: .. code-block:: javascript { "sentinelhub-s2-aoiclipped:1": { "time": "2018-05-07T16:47:48+00:00/2018-05-09T16:47:49+00:00", "limit": 1, "intersects": { "type": "Polygon", "coordinates": [ [ [ 18.726196, 53.473489 ], [ 18.720531, 53.479312 ], [ 18.708215, 53.476043 ], [ 18.719931, 53.468431 ], [ 18.73332, 53.466183 ], [ 18.739586, 53.471854 ], [ 18.726196, 53.473489 ] ] ] }, "zoom_level": 14 }, "qzsolutions.cigreen:1": { "satellite": "Sentinel-2 Level 2 (BOA) AOI clipped" } } .. _qzsolutions-cigreen.supported_data_blocks: Supported data blocks --------------------- Currently this block supports input from data blocks: Landsat-8 Level 1 (TOA) AOI clipped ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To see this block on up42 please `click here `_. Sample block parameters when using *Landsat-8 Level 1 (TOA) AOI clipped* data block: .. code-block:: javascript { "satellite": "Landsat-8 Level 1 (TOA) AOI clipped" } Formula used for CIgreen calculation: :math:`B05 / B03 - 1` Pléiades Download ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To see this block on up42 please `click here `_. Sample block parameters when using *Pléiades Download* data block: .. code-block:: javascript { "satellite": "Pleiades Download" } .. warning:: Please notice that ``satellite`` parameter does not contain 'é' character but 'e'. Formula used for CIgreen calculation: :math:`NIR / G - 1` Sentinel-2 L1C MSI Full Scenes ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To see this block on up42 please `click here `_. Sample block parameters when using *Sentinel-2 L1C MSI Full Scenes* data block: .. code-block:: javascript { "satellite": "Sentinel-2 L1C MSI Full Scenes" } Formula used for CIgreen calculation: :math:`B08 / B03 - 1` Sentinel-2 Level 2 (BOA) AOI clipped ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To see this block on up42 please `click here `_. Sample block parameters when using *Sentinel-2 Level 2 (BOA) AOI clipped* data block: .. code-block:: javascript { "satellite": "Sentinel-2 Level 2 (BOA) AOI clipped" } Formula used for CIgreen calculation: :math:`B08 / B03 - 1` SPOT 6/7 Download ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To see this block on up42 please `click here `_. Sample block parameters when using *SPOT 6/7 Download* data block: .. code-block:: javascript { "satellite": "SPOT 6/7 Download" } Formula used for CIgreen calculation: :math:`NIR / G - 1` Output format ------------- The block produces a feature collection with ``up42.data_path`` property containing a name of the result file. Contents of *data.json* file returned by a block configured in the previous example: .. code-block:: javascript { "type": "FeatureCollection", "features": [ { "type": "Feature", "bbox": [ 18.69873046875, 53.46189043285912, 18.74267578125, 53.48804553605621 ], "geometry": { "type": "Polygon", "coordinates": [ [ [ 18.720703125, 53.46189043285912 ], [ 18.69873046875, 53.46189043285912 ], [ 18.69873046875, 53.47496999954854 ], [ 18.69873046875, 53.48804553605621 ], [ 18.720703125, 53.48804553605621 ], [ 18.74267578125, 53.48804553605621 ], [ 18.74267578125, 53.47496999954854 ], [ 18.74267578125, 53.46189043285912 ], [ 18.720703125, 53.46189043285912 ] ] ] }, "properties": { "up42.data_path": "271b2edc-49ba-4f5b-90c8-f3ac5810ca29.tiff", "acquisitionDate": "2018-05-08T09:50:28" } } ] } Capabilities ------------ Input ~~~~~ This block has such ``input_capabilities``: .. code-block:: javascript "input_capabilities": { "raster": { "up42_standard": { "format": { "or": [ "SAFE", "GTiff", "DIMAP" ] }, "sensor": {"or": ["Landsat8", "Sentinel2", "SPOT", "Pleiades"]}, "bands": ["red", "nir"] } } } .. warning:: Please ensure that input block is listed under :ref:`qzsolutions-cigreen.supported_data_blocks` section. Output ~~~~~~ This block has such ``output_capabilities``: .. code-block:: javascript "output_capabilities": { "raster": { "up42_standard": { "format": "GTiff", "dtype": "float", "resolution": ">" }, "custom": { "bands": [ "cigreen" ] } } }