Showing posts with label clutter. Show all posts
Showing posts with label clutter. Show all posts

Monday, 30 January 2023

OpenCPN setting chartscale to display waypoints

Setting the default chart scale to display new waypoints

On the toolbar go to the Options/Ships/Routes/Points tab and fill in the scale you would like to see the waypoint text disappear from view on the chart. I have found different areas can benefit from having the text hidden from view at a low scale. 

 When I zoom out to get a better overall idea of a coast line I find that it can become hard to look at the chart with the waypoint text cluttering the screen.  I select the Show waypoints only at a chart scale greater than 1: and my preference is 1: 5000000. This of course can be changed easily however it really is a personal choice. When this options is selected any new waypoint created will have this scale as the default, you will however also need to go into the extended properties of the waypoint and make sure the function is selected. 


I select a scale with a little trial and error, I adjust the number to suit the section of chart. I use 1:5000000 as a starting point, it really depends on the number of waypoints in the area to what scale I use. 


A waypoint set to display at a scale greater than 1:5000000  


Below is an example of not having any scale set, all the waypoints will be displayed at any scale the chart is set to. This can also have the side effect of slowing the computer due to the additional resources used to display this much data. 

A chart displayed with no scale set for the waypoint text to disappear, the chart can become cluttered as seen here and the PC can react badly due to the resources used to display this amount of data. 


Another example, these waypoints are set to disappear with a scale greater that 1:900000 while it is a little hard to see in the screenshot the scale now is 1:540000




The same chart with the scale now at 1:1.1MM, certain details of the chart are easier to see without the waypoint text, and the laptop doesn't work as hard. 

The waypoint properties of one of the waypoints, showing the scale of 1:900000

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Monday, 16 January 2023

OpenCPN Keyboard Short Cuts 'hotkeys'

 There are times when the amount of data on the OpenCPN charts can cause a visual overload which can make it hard to see the information you want. For example when your planning to go into a new port all that chart text and details can make it hard to see where you actually need to go.

There are several 'hotkeys' that can be used to quickly remove data. These 'hotkeys' remove the need to fumble through the several layers of settings menus to find the switch to turn on or off the needed function. 

A ‘hotkey’ is in this instance is the capital letter listed to toggle the function:

So if ‘caps lock’ is off press the ‘shift’ key and the required letter. E.g shift V

With ‘caps lock’ on press the required key. E.g V

To reduce the amount of clutter on the chart quickly.

A toggle bottom features, turning it on is useful when anchoring. E.g sand, rock, mud

D open/close the charts zoom/scale weighting or detail slider.

O toggle Chart Outlines.

S toggle Soundings

T toggle Text

V toggle All nav objects (user data Waypoints etc) except Active route & track,

Keep in mind if you select hotkey T to clear text, the bottom hotkey A detail also is hidden. 

See the screen captures below for a visual of how the different hotkeys effect the chart


Nice to know Hot Keys

I haven't included screen captures but if your interested experiment. 

C change colour scheme -new similar to Ctrl+C, Ctrl+G and F5 sets up twlight mode or night mode
L toggle ENC Lights on/off. “Users Standard” display category.
M toggle Measure Tool F4
P toggle Pause of oesenc charts test
Q toggle Chart Quilting
U toggle Quality of Data for Vector Charts.
+ Zoom In
- Zoom Out

OpenCPN Manual Keyboard Shortcuts


A fairly standard chart, there are some areas in the world where there is certainly a lot more clutter, however rather than go looking for some, this should give some idea of what happens. As can be seen here waypoints and a track, bottom description, soundings and chart text, and the edges of addition charts are displayed. 
Use the V hotkey to remove the user created data in this case the waypoints and track data has been hidden. 

Use the O hotkey to remove the chart outlines shown in red in the previous screen shot, this helps remove some clutter.


Use the S hotkey to remove the sounding information


Use the A to remove bottom detail, its easier to see the detail has gone from the chart east of the islands.


Use the T hotkey to remove text, place names and general text, as can be seen here the level of clutter has been greatly reduced


Hotkey D to open a slider to increase detail or remove chart detail. 


The screen shot of the detail turned down, No hotkey just adjust the slider to the desired level of detail clutter, this can be used for short or long term, select a level you are happy with and feel safe when using. 

This is a screen shot of the detail slider set to the max level of detail.