# RELEASE NOTES
## spatstat 1.58-0
### 09 January 2019
We thank Andrew Bevan, Hamidreza Heydarian and Andrew P Webster
for contributions.
### OVERVIEW
* Mark-mark scatter plot.
* Standard error calculation for inverse-distance weighting
* Minor improvements and extensions.
* Version nickname: 'Drop Bear'
### NEW FUNCTIONS
* markmarkscatter
Mark-mark scatterplot
### SIGNIFICANT USER-VISIBLE CHANGES
* idw
Standard errors can now be calculated by setting 'se=TRUE'.
* im.apply
Computation accelerated, especially when NA's are absent.
New arguments 'fun.handles.na' and 'check'.
* kppm, dppm, clusterfit
Changed precedence rule for handling the algorithm parameters
in the minimum contrast algorithm. Individually-named arguments
'q,p,rmax,rmin' now take precedence over entries
with the same names in the list 'ctrl'.
* rotmean
Improved algorithm stability
* summary.kppm
Prints more information about algorithm convergence.
* closepairs.pp3, crosspairs.pp3
Argument 'what' can take the value "ijd"
* plot.onearrow
Graphical parameters, specified when the object was created,
are now taken as the defaults for graphical parameters to the plot.
### BUG FIXES
1. rotmean
When result="im" the resulting image did not have the same dimensions
as the input. [Spotted by Hamidreza Heydarian.]
Fixed.
2. rotmean
If argument 'origin' was given, and if result="im" was specified,
the resulting image was wrongly displaced.
Fixed.
3. runifpointx
Result was mangled when n=0 or n=1.
Fixed.