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18-02-2017, 06:56
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#1156
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
cgreen..
Easy!
You've to learn to let a bat file write into a text file. Let that bat file run as a message in Watchdog when a alarm occurs.
A small bat-file example:
rem File "c:\logs\PrintLog.bat"
@echo off
echo date /T >> c:\logs\mylog.txt
echo time /T >> c:\logs\mylog.txt
echo Watchdog Alarm NoGo35 >> c:\logs\mylog.txt
echo: >> c:\logs\mylog.txt
Google is a good friend, like this to explain my example: https://www.google.se/search?q=bat+f...L_Lk8Af4u4-gBg
Håkan
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18-02-2017, 08:06
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#1157
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Quote:
Originally Posted by Hakan
cgreen..
Easy!
You've to learn to let a bat file write into a text file. Let that bat file run as a message in Watchdog when a alarm occurs.
A small bat-file example:
rem File "c:\logs\PrintLog.bat"
@echo off
echo date /T >> c:\logs\mylog.txt
echo time /T >> c:\logs\mylog.txt
echo Watchdog Alarm NoGo35 >> c:\logs\mylog.txt
echo: >> c:\logs\mylog.txt
Google is a good friend, like this to explain my example: https://www.google.se/search?q=bat+f...L_Lk8Af4u4-gBg
Håkan
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Thanks Hakan, but does opencpn publish the name of the boundary that you are currently entering? I know that opencpn identifies the boundary name because it displays it in the alarm message box. Just wondering if that name is also available outside of the program to log somewhere. Easiest way it seems to me would be to have a similar option to the message box, and instead of displaying the alarm, simply append a log file in similar fashion that you describe, except from inside opencpn. Cheers, Chris
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18-02-2017, 09:17
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#1158
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
Chris
For each Watchdog alarm you create you can attache a bat file command, see attache shoot.
You've to create the bat file to print whatever text you like to the text file. My example, with the "NoGo35", was referring to your text above.
But OCPN and a WD alarm has to be the one to trig the Windows bat file to run and print the log text. Or what do mean with "outside OCPN"
Håkan
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18-02-2017, 13:10
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#1159
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
Chris
Sorry, my example was a bit hasty.
This works better:
rem File "c:\logs\PrintLog.bat"
@echo off
date /T >> c:\logs\mylog.txt
time /T >> c:\logs\mylog.txt
echo Watchdog Alarm NoGo35 >> c:\logs\mylog.txt
echo: >> c:\logs\mylog.txt
Håkan
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18-02-2017, 14:34
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#1160
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Quote:
Originally Posted by Hakan
Chris
For each Watchdog alarm you create you can attache a bat file command, see attache shoot.
You've to create the bat file to print whatever text you like to the text file. My example, with the "NoGo35", was referring to your text above.
But OCPN and a WD alarm has to be the one to trig the Windows bat file to run and print the log text. Or what do mean with "outside OCPN"
Håkan
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Thanks very much for the explanation Hakan. I can do as you say with bat file, or similar with a python script. That makes sense. I am trying to do something a bit unusual. I had defined a number of OD Points (buoys) in the Watchdog Path & Point Manager, and I had setup a single boundary exclusion alarm to trigger whenever I enter any of the multiple exclusions that are defined. This works great, and triggers alarm whenever entering any of the exclusions, and watchdog displays the name of the exclusion that has been entered. I am wondering if I can grab that exclusion (OD Point) name, and log it?
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19-02-2017, 00:14
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#1161
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
Chris
No I can't figure out any method for Windows to catch the GUID causing an alarm. I suppose it has to be coded in WD as a new plugin function. So a Flyspray task for a log print function may be the method for this as Rick mentioned. Why not prepared by a discussion at the Watchdog thread?
Håkan
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19-02-2017, 06:48
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#1162
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
Chris...more
One thought:
Meanwhile it's actually possible to make as many WD inclusion alarms you want. One for each object you want to guard. And of course one bat-file printing different text for each alarm. All bat files can though print to same text/log file if you want.
Håkan
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19-02-2017, 07:04
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#1163
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Quote:
Originally Posted by Hakan
Chris...more
One thought:
Meanwhile it's actually possible to make as many WD inclusion alarms you want. One for each object you want to guard. And of course one bat-file printing different text for each alarm. All bat files can though print to same text/log file if you want.
Håkan
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Yes, I have been experimenting with that too, but I always run into trouble with WD warning that GUID does not exist, even when I copy and paste it from an existing OD point. Not sure if inclusion alarm is going to work, because I want the alarm to trigger when I enter the boundary circle, not when I exit it. For now though, I need to figure out why WD doesn't like any GUID that I enter; it is no doubt something I am doing wrong. Chris
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20-02-2017, 01:14
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#1164
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,112
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Re: Help / FAQ
Chris
I tried and I agree to your experiences.
I did:
> Made a boundary in OD, exclusion to get inside guard area.
> Copied the GUID to clipboard by the right click menu. Pict 1
> Set up a inclusion alarm. Paste the copied GUID from clipboard and attached a bat file. Pict 2
> Works and was also printing to the log. Pict 3. But this is basically an anchor alarm so it's set to alarm when outside the boundary.
What you need is an opposite function. May be called "Exclusion Alarm"
The function would be to alarm if own ship is entered into a specific GUID. That's apart from the "GPS course crosses boundary in......" which is a general guard for all boundary GUID.
Maybe you would create a new Watchdog thread and refer to this to see if Jon or Sean has additional comments.
Håkan
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23-02-2017, 11:38
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#1165
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Is there any way to force opencpn to re-read (and update map with) either
C:\ProgramData\opencpn\navobj.xml.changes
or
C:\ProgramData\opencpn\plugins\ocpn_draw_pi\data\O Dnavobj.xml.changes
without restarting opencpn?
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23-02-2017, 17:13
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#1166
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Registered User
Join Date: Oct 2011
Boat: Valiant 42
Posts: 6,008
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Re: Help / FAQ
I don't think restarting O re-reads charts. Look at Options->Charts for the rebuild or rescan selection.
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24-02-2017, 05:25
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#1167
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Registered User
Join Date: Feb 2010
Location: Tierra del Fuego
Boat: Phantom 19
Posts: 6,145
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Re: Help / FAQ
cgreen...
What exactly do you intend to achieve?
The .changes files temporarily store changes in the navigation objects (waypoints, routes, tracks etc.) before they are persisted in the main data files (for performance reasons it is not possible to save the possibly huge data file every time there is a change) and their purpose is to prevent data loss in case OpenCPN is killed between the full saves due to a bug or power outage or whatever else reason. They have nothing to do with maps (charts).
The same concept is copied in the draw plugin.
But to generally answer your question: You can't modify OpenCPN's "live" data files outside of OpenCPN while the program is running without causing a major disaster or at least having your external changes lost at any moment when OpenCPN itself saves it's data.
Pavel
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24-02-2017, 11:12
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#1168
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Quote:
Originally Posted by nohal
cgreen...
What exactly do you intend to achieve?
The .changes files temporarily store changes in the navigation objects (waypoints, routes, tracks etc.) before they are persisted in the main data files (for performance reasons it is not possible to save the possibly huge data file every time there is a change) and their purpose is to prevent data loss in case OpenCPN is killed between the full saves due to a bug or power outage or whatever else reason. They have nothing to do with maps (charts).
The same concept is copied in the draw plugin.
But to generally answer your question: You can't modify OpenCPN's "live" data files outside of OpenCPN while the program is running without causing a major disaster or at least having your external changes lost at any moment when OpenCPN itself saves it's data.
Pavel
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Thanks, that what I suspected, but thought I had better check. When I say map, I don't mean anything to do with charts. I just mean the active display that shows vessel position and waypoints etc. My only reason for asking about the .changes files was to try and figure out a way to get new points (waypoints, or in fact any kind of a point) onto the display while opencpn is running, and without actually drawing them and entering details. My next thought was that I could send $GPWPL waypoint messages to opencpn via a virtual com port. However, I don't think opencpn does anything with those messages. Not sure if there is some other method to mark positions on the active display while program is running?
Cheers, Chris
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24-02-2017, 11:32
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#1169
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Registered User
Join Date: Feb 2010
Location: Tierra del Fuego
Boat: Phantom 19
Posts: 6,145
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Re: Help / FAQ
cgreen...
OpenCPN supports WPL sentences for APRS position reporting (HAM "standard") for a long time. Enable it on the AIS tab in the Toolbox if you have it disabled. They have the same functionality as AIS or radar targets (track recording, creating a permanent waypoint on current position etc.)
Pavel
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25-02-2017, 08:08
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#1170
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Registered User
Join Date: Jan 2017
Posts: 23
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Re: Help / FAQ
Quote:
Originally Posted by nohal
cgreen...
OpenCPN supports WPL sentences for APRS position reporting (HAM "standard") for a long time. Enable it on the AIS tab in the Toolbox if you have it disabled. They have the same functionality as AIS or radar targets (track recording, creating a permanent waypoint on current position etc.)
Pavel
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Pavel, that is exactly what I need. Thanks very much for the help. Chris.
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