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.