photobiologyFilters 0.5.1 (2020-04-28)
======================================

* Add data for Heliopan UVIR-cut "Digital" filter.
* Add data for Fotga UV IR CUT filter.
* Correct wrong spelling of Tangsinuo Technologies in two filters' names.
* Add filter.properties metadata when available.
* Add refractive_index.mspct with data for 15 materials.
* Revise the User Guide.

photobiologyFilters 0.5.0 (2019-06-25)
======================================

* (Code breaking!) Rename many of the member spectra contained in filters.mspct
so that all names start with the brand of the filter.
* Rename vectors of names used as accessors to end in "_filters" to avoid
possible conflicts with other packages.
* Add data for various filters used in photography.
* Add data for some filters supplied by UQG Optics.
* Add data for 49 new filters supplied by MIDOPT.
* Add data for 5 old types of UV-pass filters from Schott.
* Rebuild all spectral data objects with current version of package
'photobiology' (= 0.9.28), setting "how.measured" attribute when known.
* Remove a non-ASCII character from the data.
* Require R 3.5.0 due to the new file format used to store the data.

photobiologyFilters 0.4.4 (2018-01-15)
======================================

Rebuild data objects, setting attribute "what.measured".
Add data for MIDOPT filters, from Midwest Optical Systems, Inc.
Add data for different types of window glasses, as used by CIE.
Rename some filters, for clarity and consistency (NOT FULLY BACKWARDS COMPATIBLE).
Add lists of names by type, colour and by material.
Update documentation, expanding the "User Guide" and removing the
"Data Catalogue".
Build documentation web site with 'pkgdown'.

photobiologyFilters 0.4.3
=========================

Rebuild data objects.
Update documentation.
Build documentation web site with 'staticdocs'.

photobiologyFilters 0.4.2
=========================

Rebuild data objects. Only change is in dependencies and fixed a bug in the
build.

photobiologyFilters 0.4.1
=========================

Update for ggplot2 2.0.0, ggspectra 0.1.0, and photobiology 0.9.1.
Only change is in dependencies.

photobiologyFilters 0.4.0 (NOT BACKWARDS COMPATIBLE)
=========================

Change how data are stored. Data are now in filter_mspct objects, in most
cases each object contains data for filters from a single supplier.

Replace SCHOTT filter data with those supplied by SCHOTT. Now data for 67
filters are included and data on thickness and reflection multiplier are
included for each filter type.

Add data for greenhouse films from XL Horticulture Ltd.

Simplify and improve all data building scripts.

Revise vignettes to use data in new format and to include new data added.

photobiologyFilters 0.3.2 (not released)
=========================

Add spectra for some Lee filters (data digitized from data sheets).
Remove all references to data.table from data object build scripts.
Rebuild all data objects with photobiology (0.8.11).

photobiologyFilters 0.3.1
=========================

Rebuid data and package with photobiology 0.8.0 and remove dependency
on package data.table.

photobiologyFilters 0.3.0
=========================

Rebuid data and package with photobiology 0.6.0.

photobiologyFilters 0.2.4
=========================

Added data for Petri dishes.

photobiologyFilters 0.2.3
=========================

Revised script used for creating filter data objects. To avoid problems with
conversions to absorbance and taking into account that what can be really
measured is that transmittance is below the detection limit of the
instrument used, the minimum value of fractional transmittance has been
forced to be 1 E-5, with the meaning of < 1 E-5, consistently with the
earlier encoding used for Schott optical glass filters.

photobiologyFilters 0.2.2
=========================

Added data for Plexiglas 2458 GT (SUNTAN).

photobiologyFilters 0.2.1
=========================

Rebuilt with photobiology 0.5.7, which is now required.
The User Guide was updated to use simpler code as allowed by photobiologygg 0.2.5.

photobiologyFilters 0.2.0
=========================

Rebuilt with photobiology 0.5.1, now required, which needed minor edits to the User Guide.

photobiologyFilters 0.1.13
==========================

Rebuilt all filter.spct objects with photobiology 0.4.6
Vignettes updated.

photobiologyFilters 0.1.12
==========================

Added to the 'catalogue of filters' vignette plots for filters that were missing.

photobiologyFilters 0.1.11
==========================

Cleaned up the scripts I use for building the data objects. Decided so save storage space and to only include spectral transmittances expressed as fractions of one, now that the design of the code in the photobiology package is getting stable. Revised the 'catalogue of filters' vignette to solve some plotting problems, and to simplify the code used.

photobiologyFilters 0.1.10
==========================

Renamed all filter spectra objects from '.dt' to '.spct'.

photobiologyFilters 0.1.9
=========================

Added data for several plastic sheet types including several types of Plexiglas.

photobiologyFilters 0.1.8
=========================

Added data for many Schott optical filters.
Now data is in data.table format (compatible with data.frame), added class attributes preparing for future improvements.
Data is now in S3 objects of class "filter.spc" but no class methods are yet defined.
The names of the variables in the "filter.spc" objects has changed and now they contain the data both as percentages
and fractions. This makes use easier, but wastes some storage space. Now photobiology 0.3.0 or later is required.

photobiologyFilters 0.1.7
=========================

Function calc_filter_multipliers() was moved to package photobiology. However, this should be mostly invisible because the whole photobiology package is imported.

photobiologyFilters 0.1.6
=========================

Added data for some optical glass filters from Schott.

photobiologyFilters 0.1.5
=========================

Fixed a BAD bug in the rescaling code in calc_filter_multipliers that affected the returned values (percents vs. fractions).

photobiologyFilters 0.1.4
=========================

Added missing import directive.

photobiologyFilters 0.1.3
=========================

Small edits to vignettes.

photobiologyFilters 0.1.2
=========================

Fixed documentation.

photobiologyFilters 0.1.1
=========================

Added warning to documentation as the spectral transmittance for Rosco #00 is not that of the filters currently being sold.

photobiologyFilters 0.1.0
=========================

First version. Includes transmittance spectra for many of the filters we have measured during the last 20 years.
