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

NAME DESCRIPTION METHODS new Settings AddPoints Draw AUTHOR SEE ALSO

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

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