Showing posts with label scale. Show all posts
Showing posts with label scale. Show all posts

Monday, 30 January 2023

OpenCPN Add Waypoints Into A Route

 A quick and easy way to put in additional waypoints into a ready made route. 

Route created running across the land, not much thought to what's in the way.

Right click on the route in a location you feel a new waypoint should be, don't be too precise as these can be easily moved later. Then select insert new waypoint, in this example I will insert two waypoints but due to the scale of the chart they were not displayed.


After zooming in the new waypoints are visible, the default route waypoint icon is displayed 


To move the waypoint into a location so the route will pass the obstruction the waypoint properties box will need to be open (this is dependant on the setting of the lock waypoint option in Options/Ships/Routes/Points). With this option set accidental movement of any waypoint will not be possible unless the properties box for that waypoint is open.

Waypoint properties box is open waypoint can then be moved by click and dragging into a place to miss the obstruction, and place us in the East Coast Current. 



Both the new waypoints have been moved, this part of the route is now clear and other obsticals cane be looked for. 


At a scale similar to the first example.


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OpenCPN Add Waypoints Into A Route

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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