I have found a possible bug in the map of Lake Calhoun. I had marked 8-9 waypoints for an early morning trip Saturday, and transferred them to my Garmin e-Trex GPS. While using that to locate my "spots", my Vexilar showed the depths were way off. I remembered what the structure looked like, so I tried to find key areas to try and determine if my GPS, or Vexilar was off. After drilling numerous holes, and finding a shallow spot, the Vex was right on. My GPS seemed to be functioning normally, so I made best with what I had. When I arrived home, I then imported my track log, and 5 new waypoints I marked while sight fishing. The new waypoints were made in less than 15 ft. of water, and I could see the bottom. The track log seemed normal; It showed me hitting the exact waypoints I had created with Lakemaster. The new waypoints, however, showed me in 30+ ft of water, according to the software. I had also turned on the GPS while driving (on the parkway road) for a brief period. This track showed me to be driving ON the lake with Lakemaster! After looking at this all for sometime, I concluded the according to the track log, and waypoints, that if the underlying map was shifted to the left to some degree, everything then would line up correctly. It seems as though it is off to the right by several hundred feet.
Now, I haven't had any other problems like this with any other lakes as of yet. I'm thinking that this is a problem with Lakemaster, and Lake Calhoun specifically. The matter is, I created the initial waypoints in Lakemaster, and then exported those to the GPS. Is the map datum incorrect then? I've emailed LakeMaster regarding this, but have had no response yet.
For those of you that have it with Calhoun on it... enter this waypoint in and please post your results: N44D 56M 08.7S W93D 18M 30.4S
The spot should be on the SE side of the lake, where theres a frying pan shaped reef. The spot is on the east side "point" of the pan, above the saddle, almost exactly between the 15 and 20 ft lines.
Thanks guys.
------------------ -FNC
"Hell froze over last week... glad I brought the Vex"
We're usually fully stocked but you caught me on a bad night!
Tuesday night is usually "board meeting" night if you know what I mean. Stop in and have a tasty beverage some Tuesday night after these holidays are over and things get back to normal.
Im sure I will be back soon my kids go through the pork burgers pretty quick. Suzy knows who I am she can help ya. Cant ever turn down a nice cold Busch Light.
Nice to finally meet you tonight. Make sure you tell me who you are again next time you come in. I will probably forget.
Let me know when you are dropping in again and I'll make sure we have more of those beverages around!
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I have found a possible bug in the map of Lake Calhoun. I had marked 8-9 waypoints for an early morning trip Saturday, and transferred them to my Garmin e-Trex GPS. While using that to locate my "spots", my Vexilar showed the depths were way off. I remembered what the structure looked like, so I tried to find key areas to try and determine if my GPS, or Vexilar was off. After drilling numerous holes, and finding a shallow spot, the Vex was right on. My GPS seemed to be functioning normally, so I made best with what I had.
When I arrived home, I then imported my track log, and 5 new waypoints I marked while sight fishing. The new waypoints were made in less than 15 ft. of water, and I could see the bottom.
The track log seemed normal; It showed me hitting the exact waypoints I had created with Lakemaster. The new waypoints, however, showed me in 30+ ft of water, according to the software.
I had also turned on the GPS while driving (on the parkway road) for a brief period. This track showed me to be driving ON the lake with Lakemaster! After looking at this all for sometime, I concluded the according to the track log, and waypoints, that if the underlying map was shifted to the left to some degree, everything then would line up correctly. It seems as though it is off to the right by several hundred feet.
Now, I haven't had any other problems like this with any other lakes as of yet. I'm thinking that this is a problem with Lakemaster, and Lake Calhoun specifically. The matter is, I created the initial waypoints in Lakemaster, and then exported those to the GPS. Is the map datum incorrect then? I've emailed LakeMaster regarding this, but have had no response yet.
For those of you that have it with Calhoun on it... enter this waypoint in and please post your results:
N44D 56M 08.7S
W93D 18M 30.4S
The spot should be on the SE side of the lake, where theres a frying pan shaped reef. The spot is on the east side "point" of the pan, above the saddle, almost exactly between the 15 and 20 ft lines.
Thanks guys.
------------------
-FNC
"Hell froze over last week... glad I brought the Vex"
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