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# Release 5.3.0¶

Clawpack 5.3.0 was released on May 21, 2015. See Installing Clawpack.

Changes relative to Clawpack 5.2.2 (October 28, 2014) are shown below.

## Changes to classic¶

• One example added with a pointwise Riemann solver.

## Changes to clawutil¶

• Added nbtools.py module for working with Jupyter (formerly IPython) notebooks (still work in progress).

• Added ability to correctly call alternative Makefiles, e.g.

make .plots -f Makefile_kml

• Added support for preprocessing variables and flags

• Added support for storm surge code

## Changes to visclaw¶

• Added support for creating kml files that can be viewed on Google Earth (for GeoClaw applications). See Visualizing GeoClaw results in Google Earth.
• Added some support for JSAnimation in notebooks and other improvements, in particular to insure that filenames do not have extraneous spaces and fail to show up in animation.
• Added function gaugetools.compare_gauges and support for gauges in 3d.
• Deprecate plot_topo_file and TopoPlotData in favor of topotools.Topography methods.
• Some refactoring and cleaning up of code, and minor bug fixes.

## Changes to riemann¶

• Added 3d Euler equations in general geometries using f-waves.
• Added 2d acoustics solvers for mapped grids.
• Added some pointwise Riemann solvers for several problems in 1d and 2d.
• Added riemann_tools.py and other code to facilitate showing Riemann solutions in notebooks. Still work in progress.

## Changes to amrclaw¶

• Substantial refactoring of code, much of which should be invisible to users.

• Some changes are required in any application Makefile to update from 5.2.2 to 5.3.0.

• In 2d, remove:

$(AMRLIB)/dumpgauge.f \  • In 2d, add the files: $(AMRLIB)/stepgrid_dimSplit.f \
$(AMRLIB)/step2x.f90 \$(AMRLIB)/step2y.f90 \
$(AMRLIB)/flux2_dimSplit.f \  • In 3d, add the MODULE: $(AMRLIB)/gauges_module.f90


somewhere after $(AMRLIB)/amr_module.f90 in the list of modules. • In 3d, add the files: $(AMRLIB)/stepgrid_dimSplit.f \
$(AMRLIB)/step3x.f \$(AMRLIB)/step3y.f \
$(AMRLIB)/step3z.f \$(AMRLIB)/flux3_dimSplit.f \


Here AMRLIB = $(CLAW)/amrclaw/src/2d in 2d, for example • Gauge output refactored. • Gauge output option added to 3d code. For an example, see$CLAW/amrclaw/examples/advection_3d_swirl/setrun.py

• Dimensional splitting option added to both 2d and 3d code. To use, in setrun.py set clawdata.dimensional_split to “split” or 1.

• New approach to handling boundary conditions to fix bug where boundary conditions varying spatially along a boundary could not be specified. Illustrated in new examples/advection_2d_inflow.

• alloc changed from pointer to allocatable, igetsp stack-based,

• Several bug fixes, particularly in 3d code.

## Changes to geoclaw¶

• Some changes are required in any application Makefile to update from 5.2.2 to 5.3.0.

$(GEOLIB)/gauges_module.f90 \$(GEOLIB)/surge/holland_storm_module.f90 \
$(GEOLIB)/surge/stommel_storm_module.f90 \$(GEOLIB)/surge/constant_storm_module.f90 \
$(GEOLIB)/surge/storm_module.f90 \$(GEOLIB)/friction_module.f90

• remove the MODULE:

$(AMRLIB)/gauges_module.f90 \  • remove the file: $(GEOLIB)/dumpgauge.f \


Here GEOLIB = $(CLAW)/geoclaw/src/2d/shallow. Note that$(GEOLIB)/gauges_module.f90 must come after both  $(AMRLIB)/amr_module.f90 and$(GEOLIB)/geoclaw_module.f90 in the list of modules.

• Gauge output refactored as in amrclaw. Note it is now necessary to use the version of gauges_module.f90 in geoclaw rather than the version from amrclaw since the subroutine for printing the gauges is now in this module rather than in dumpgauge.f. In geoclaw, an additional column is printed for eta = B + h, the sea surface, in addition to the components of q.

• Multilayer code merged in and several routines refactored or consolidated.

• New support added for creating kml files for plotting results on Google Earth.

• Topography topo_type 2 and 3 are now more flexible:

• The header lines can have either the number or the text first, e.g.

NCOLS 200


or

200 NCOLS


(In either case the label is ignored, the order of lines is all that matters). Both Python and Fortran codes now support this.

• The header line for the cellsize dx can now have a single value or two values dx and dy for different resolutions in longitude and latitude. Previously a single value was allowed and dx == dy assumed.

• Added support for creating kml files that can be viewed on Google Earth (for GeoClaw applications). See Visualizing GeoClaw results in Google Earth.

## Changes to PyClaw¶

For changes in PyClaw, see the PyClaw changelog.

See pyclaw diffs