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22 lines
575 B
Plaintext
22 lines
575 B
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# pnmhistmap
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> Draw a histogram of a PNM image.
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> More information: <https://netpbm.sourceforge.net/doc/pnmhistmap.html>.
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- Draw a histogram of a PNM image:
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`pnmhistmap {{path/to/input.pnm}} > {{path/to/output.pnm}}`
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- Draw the histogram as dots instead of bars:
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`pnmhistmap -dots {{path/to/input.pnm}} > {{path/to/output.pnm}}`
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- Specify the range of intensity values to include:
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`pnmhistmap -lval {{minval}} -rval {{maxval}} {{path/to/input.pnm}} > {{path/to/output.pnm}}`
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