29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
# Histogram
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Compute the height distribution histogram (DH). Use log scale to reveal small peaks next to a dominant background. Outputs marker measurements while showing the histogram interactively in-node. Equivalent to gwy_data_field_dh.
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## Inputs
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| Name | Type | Required | Description |
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|------|------|----------|-------------|
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| field | DATA_FIELD | Yes | Input field |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| measurements | RECORD_TABLE | Measurements at the two cursor markers (x/y positions and dx/dy) |
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| marker_pair | COORDPAIR | Current cursor marker positions |
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## Controls
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| Name | Type | Default | Description |
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|------|------|---------|-------------|
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| n_bins | INT | 256 | Number of histogram bins (10–1000) |
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| y_scale | dropdown | linear | Y-axis scale: linear or log |
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## Notes
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- Cursor positions are stored as fractions of the histogram range and are set interactively.
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- Log scale displays bins as log(count); bins with zero count appear as the minimum log value.
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