| FlowJo's sophisticated Layout
Editor generates graphics that are publication-ready (or presentation-ready,
for slides). However, you can also easily export the graphics
to other programs to use their more complex tools for generating presentation
graphics.
After reading the information on this page, you
should view some examples of graphs
that were easily created in Canvas from plots generated in FlowJo.
One example is a contour plot with outliers; the other is an example
overlaying histograms.
You can export graphics into other programs in two
main ways: (1) simply copy graphs
from any graph window and paste them directly into the drawing package;
or (2) generate a layout, and either save the output to the clipboard
(and paste it directly into a drawing package), or save the output
to a disk file (and read it from the drawing package). The discussion
below applies to both of these export functions.
When you paste a graph into a drawing package (or
read it from a disk file saved by a layout), it is a group of objects.
You can ungroup the objects and access each one individually. All
text is formatted as 12-point Palatino. All lines are one-point
wide (with the exception of high-resolution contour plots; see below).
The graph of the events themselves (internal to the axes), is either
a line-drawing or a bitmap.
All histograms and CDF plots are copied as line
drawings. This means that when you ungroup the plot, you can click
on the histogram and change its line style (bold, dashed, color)
and/or fill pattern (the default fill pattern is "No fill")
and color. This allows you to overlay histograms and/or CDF plots
easily (simply paste them on top of each other). (Note that
you can also use the Layout
Editor to overlay graphics for you).
The other plot styles (contour plots, dot plots,
density plots, and pseudo-color plots) are copied as bitmaps by
default. A bitmap is a single "paint" object: it does
not consist of lines and polygons, but rather of pixels of a particular
color. Dot plots and contour plots are "1-bit" bitmaps
(black & white); the others are 8-bit depth to allow for color/grey-scale
gradations.
Bitmaps have the advantage of being easily and quickly
manipulated by drawing programs, and hence this is the default output
style. As well, you will find that for most presentations or publications,
the bitmap style is adequate. The disadvantage of bitmaps is that
they cannot be resized without risking serious distortion problems.
This makes the generation of complex figures somewhat more difficult.
Thus, FlowJo gives you the option of setting the
default output of these kinds of graphs as draw objects ("high
resolution PICT"). This setting is defined in the preferences
dialog. When you export graphs as draw
objects, then they are easily resized without distortion. In addition,
for contour plots, the contour lines are exported as "hairlines",
which appear nicer on high-resolution printouts. Because each contour
line is a polygon, you have the option to edit the contour lines
to be different color or fill patterns to make your plot look exactly
how you want.
The drawback of exporting draw objects is that it
can be much more difficult for the drawing package to handle. This
is especially true for dot plots, density plots and pseudo-color
plots! You may find these to take a long time to draw or resize,
because each dot (and each "pixel" in the density plots)
is actually a separate object. Thus, a dot plot with 10,000 dots
has 10,000 objects that the drawing program has to keep track of.
You may want to experiment with different output
styles to decide which suits your needs the best.
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