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                 - flag to draw multiple plots, one for each dataset
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 2003-2025, 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