Image::ExifTool::Plot(3pm)

NAME
Image::ExifTool::Plot - Plot tag values in SVG format

DESCRIPTION
Output plots in SVG format based on ExifTool tag information.

METHODS

  new
Create a new Plot object.

    $plot = Image::ExifTool::Plot->new;

  Settings
Change plot settings.

Inputs:
    0) Plot object reference

    1) Comma-delimited string of options

Options:
      "Type=Line"           - plot type (Line, Scatter or Histogram)
      "Style=Line"          - data style (Line, Marker and/or Fill)
      "NBins=20"            - number of bins for histogram plot
      "Size=800 600"        - width,height of output image
      "Margin=60 15 15 30"  - left,top,right,bottom margins around plot area
      "Legend=0 0"          - x,y offset to shift plot legend
      "TxtPad=10 10"        - padding between text and x,y scale
      "LineSpacing=20"      - spacing between text lines
      "Stroke=1"            - plot stroke width and marker-size scaling factor
      Title, XLabel, YLabel - plot title and x/y axis labels (no default)
      XMin, XMax            - x axis minimum/maximum (autoscaling if not set)
      YMin, YMax            - y axis minimum/maximum
      Multi                 - number of columns when drawing multiple plots,
                              followed optional number of datasets for each
                              plot (1 by default) using any separator
      Split                 - flag to split strings of numbers into lists
                              (> 1 to split into lists of N items)
      "Grid=darkgray"       - grid color
      "Text=black"          - color of text and plot border
      "Bkg="                - background color (default is transparent)
      "Cols=red green blue black orange gray fuchsia brown turquoise gold"
                            - colors for plot data
      "Marks=circle square triangle diamond star plus pentagon left down right"
                            - marker-shape names for each dataset

  AddPoints
Add points to be plotted.

Inputs:
    0) Plot object reference

    1) Tag information hash reference from ExifTool

    2) List of tag keys to plot

  Draw
Draw the SVG plot to the specified output file.

Inputs:
    0) Plot object reference

    1) Output file reference

Notes:
    On return, the Plot Error and Warn members contain error or warning strings if there were any problems. If an Error is set, then the output SVG is invalid.

AUTHOR
Copyright 2003-2026, Phil Harvey (philharvey66 at gmail.com)

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

<https://exiftool.org/plot.html>