PolarView user recently noted that raster charts were not particularly easy to view in night palette. This was a long standing issue that eluded my attention. The reason is simple – NOAA raster charts include a few palettes including a bright day palette and a dark night palette. The included night palette is, indeed, not particularly visible.
Through the magic of Technicolor[tm] upcoming update of PolarView will deal with this issue by adjusting night time BSB chart palette for best visibility. The adjusted raster palette will also match PolarView night time vector chart colors more closely.
Here is a sample of what it will look like. On the left is an updated “colorized” chart in PolarView. On the right the same chart is displayed by another navigation software product in its original colors.
Many BSB charts do not include a night time palette at all. PolarView now will attempt to use some sleigh of hand to create one. While this is by no means a universal approach, the new colorization method was tested on raster charts from a number of sources with fairly good results.
The update will also, finally, support raster charts that cross the “dateline” (180th meridian).