plus minor bug fixes.
I think I’m now ready to move on to really getting the deeper analysis
functions to play nice with the new window.

also improved FMD legend (bdiff2)

CatalogExploration plot generates a scatter plot with interactive axes.
Clicking on the axes or the data will provide an opportunity to change
that axes, or the color, or the size.
This has been implemented at the cross-section level.  I didn’t
implement it for the main map because that is, by definition, a main
map.
The cross section display acts funky when a shape is involved. I’ll
have to investigate that

aspect ratio option no longer disappears from menu. polygons no longer
bring up old window.

edit range now accuraely changes the view, and explore treats the
current view as the raw (base) catalog.

and added a little branding.

Opens the earthquakes that WOULD be in the cross section, not the
projected cross section itself.
also added some zooming functions on main map that may come or go,

Testing with a huge dataset inspired by a talk with Paul S., realized a
few big places that could change.  Added a smarter distance2curve,
which greatly reduced time of calculating xsections.
Cross sections now are filtered by the active shape.
Moment calculating is more forgiving if not provided a catalog
if there are lots of events, the marker is changed to make for faster
drawing.

definitely a broken checkin

histgra is pretty convoluted, so I didn’t change that itself.
Fixed problem where uicontextmenus would multiply. The problem is that
when they are removed from a plot/axes/whatever they don’t actually go
away. They’re attached to the figure.  I made sure all contexts were
named so they could be tracked back to their sources, and that several
of them wouldn’t multiply

cross section tab was deleted, but cross section wasn’t.

if a figure gets its position via `position_in_current_monitor` , then
it will be placed on the active monitor (whichever monitor the mouse is
in).  If figure is too tall, and a taller monitor is available, it will
be placed there instead.  One can specify center, left, or right, along
with a border.

auto lettering of cross sections.
cross sections are objects, making them much easier to manipulate
can change cross section width (through tab)
main map window grows and shrinks according to whether cross sections
exist
cross section can be turned into a shape.
cross sections are not tied to a catalog, but you can use the
XSection.project(catalog) function to project a catalog onto the cross
section.

instead of taking a string “catname”, depending on ZG.(catname), it now
takes a function that returns a catalog or catalogView.
Also, fixed accessing cumplot from the ZmapMainWindow.

can now create / clear shapes and create cross-sections from the main
map axes context menu.  Cross sections can be deleted by choosing
“delete” from the appropriate cross-section tab.

fixed tolerance so that shape corners can be selected.  Fixed update of
ShapeCircle to keep new radius.  Made ShapeGeneral copyable. Added
options for log/linear y-axes plots.
Shapes are still being stored oddly because they aren’t updated without
redrawing

axes were being drawn multiple times.

at this stage, from the ZmapMainWindow, you can edit catalog time
ranges with the cum plot. This activates the undo, which saves
(configurably) the last 5 catalogs (with shape). in future, grid
options / grids too

better interactive menu, autoreplot when changing cumplot

there would have been a conflict with a different matlab toolbox.
additionally: got rid of the no-longer-relevant qui and quitzmap files.

now ZmapSliceFunction is equivelent to ZmapGridFunction.  The intent is
to produce a single place where slices can be displayed interactively.

bcrossVt2 is in the process of being converted to use this.

new catalog contains earthquakes on a great circle curve from one point
to another.  also contains curve details, distance along strike for
each event, displacement from the curve, and curve length.

the original catalog was modified to make it more compatible with being
subclassed. This involved adding a method to create a blank catalog
(which all subclasses would also use), and routing every catalog change
[sort, filter, etc] through the subset function. This means that
subclasses only need to implement SUBSET, and get all the other
functionality for free.

 ZmapXsectionCatalog rounds out the display catalogs.  It contains all
the information necessary to plot cross sections, though no plotting
routines are yet included.  They are buried in the
plot_cross_section_from_mainmap.m file.  This also makes it so that the
gridfun.m can work with cross sections, since it is only allowed to get
a single catalog that must contain this additional information.

Must be tested, though.  epecially gridfun
One behavioral change: if shape is requested, but none exists, it gives
a warning, but doesn’t ask you to select a new shape.
The ZmapGrid is capable of handlng 3-d matrices, but that isn’t
implemented in the constructor yet.
To do: modify create_grid to leverage this.Make sure rest of code base
can handle this.