A new park?

[FletcherJ]

Greetings,

I am playing with the code to create a polygon on page 191 of the manual. I type it in per the manual (except I am using C#). Now the manual has an example, but doesn't say what to expect. What I get is a triangle that stretches from a point between Nebraska and Kansas to a point about 30 miles east of Cincinnati to a 3rd point off the coast of Africa. Given that the example has more than 3 points, I was zooming in on the points to see if there might be multiple points. When I choose the 3rd point off the coast of Africa (about 000d 17' 44", -0d 11'47" with a zoom of 5 mi, (open ocean), what showed up but:

"Whiskytown Shasta Trinity National Recreation Area"

Now I might be mistaken, but I could have sworn that this is a National Park in Northern CA, near the city/country of Shasta. Not quite sure how it ended up out off the coast of Gabon/Ghana (heck Somlia is on the East coast of Africa, so I know it wasn't stolen by the Somalian pirates....) I am only using the 01, 05, and US data sources.

So my question is:
1) Why, when I follow the example on page 191 for .CAD.Polygon(points, long):CadObject do I get a triangle stretching across the US and down to Africa (is this really what I should be seeing?)
2) How did a National Park end up off the coast of Africa?

Thanks,

me

[David.Trecht]

I have found similar issues with many of the samples they have in their book. I know they are just samples, but many of them just don't work

[ROstmeyer]

I have found similar issues with many of the samples they have in their book. I know they are just samples, but many of them just don't work

It appears to work fine for me! The code on that page, as the OP suggested, is VB.Net. If one types the code as is in VB-NET (VS-2010), which I just did, the program works runs fine and creates two triangles, as expected. Can't be sure what exactly the OP typed in, when he tried it in C#, and I am not as familiar with C#, but if one translates the code correctly to C# or any other language, it has to work. It can't be working in one language, but not in the other.

[CraigWY]

I am playing with the code to create a polygon on page 191 of the manual. I type it in per the manual (except I am using C#).

If you "type it per the manual" it won't work, since you are using C# but the code shown is in VB.

1) Why, when I follow the example on page 191 for .CAD.Polygon(points, long):CadObject do I get a triangle stretching across the US and down to Africa (is this really what I should be seeing?)

You must be doing something wrong. In particular if you are typing VB code in the C# environment, as you said above and you expect it to work.

[BobPark]

I am playing with the code to create a polygon on page 191 of the manual. I type it in per the manual (except I am using C#). Now the manual has an example, but doesn't say what to expect.

FletcherJ, can you post a copy of the C# code as you typed it in?

[UShadow]

1) Why, when I follow the example on page 191 for .CAD.Polygon(points, long):CadObject do I get a triangle stretching across the US and down to Africa (is this really what I should be seeing?)

You must be typing something wrong. The following code (which is the C# equivalent of what is given on pg 191), works with no problems in VS-20120, C#. I just typed in in, no problems at all. Regarding the park in Africa, it must be a data error, you should probably contact undertow and let them know.

Code: Select all

      private void menuItem86_Click_1(object sender, EventArgs e)
        {
            MapPro80.TrPoint[]  Tpt= new MapPro80.TrPoint[20];
            MapPro80.CadObj Tpg1, Tpg2;
            // Define some points to be used for polygons
            Tpt[1].x = -100;
            Tpt[1].y = 40;
            Tpt[2].x = -100;
            Tpt[2].y = 50;
            Tpt[3].x = -88;
            Tpt[3].y = 32;
            Tpt[4].x = -96;
            Tpt[4].y = 38;
            Tpt[5].x = -84;
            Tpt[5].y = 39;
            Tpt[6].x = -80;
            Tpt[6].y = 38.5;
            Tpt[7].x = -85;
            Tpt[7].y = 34;
            // Draw Polygon with first 4 Points
            Tpg1 = axMapPro1.Cad.Polygon(ref Tpt[1], 3);
            Tpg1.Pen.width = 2;
            Tpg1.Pen.Color = ColorTranslator.ToOle(Color.Red);
            Tpg1.Brush.Color = ColorTranslator.ToOle(Color.Blue);
            //  Draw a second polygon with Points 5, 6, and 7
            Tpg2 = axMapPro1.Cad.Polygon(ref Tpt[5], 3);
            Tpg2.Pen.width = 1;
            Tpg2.Pen.Style = 2;
            Tpg2.Pen.Color = ColorTranslator.ToOle(Color.Green);
            Tpg2.Brush.Color = ColorTranslator.ToOle(Color.Red);
            axMapPro1.Refresh();
        }

[Gyrotech]

Ushadow, if I had to guess, I'd say FletcherJ did everything right, when converting the VB code to C#, with the exception of passing the points to the CAD function by "ref". He probably didn't do that

I'd be very interested in knowing if that's what happened. FletcherJ, can you tell us if that was the problem?

[FletcherJ]

Gyrotech,

Congratulations, you nailed it. Just missing the "ref" statements.

Now I am just curious about why there is a U.S. national park at lat/lon 0,0....

Thanks,

me

[BobPark]

Now I am just curious about why there is a U.S. national park at lat/lon 0,0....

That sounds like a data problem. Have you reported it to undertow?

[FletcherJ]

Bob,

So they don't monitor the forums? Should I just send an email to support pointing them to the forum message? Or is there a reporting system that I have overlooked?

Thanks,

me

[BobPark]

I don't think they do. I believe this was setup for us users to exchange ideas. I have emailed them directly a couple of times in the past, and they have been very responsive!

Oh, yeah, I emailed them at support@undertowsoftware.com

[FletcherJ]

I don't think they do. I believe this was setup for us users to exchange ideas. I have emailed them directly a couple of times in the past, and they have been very responsive!

Oh, yeah, I emailed them at support@undertowsoftware.com

Bob,

Thanks, they have now been officially notified of the new park in the oceans off Africa.

[mAlagi]

Happy to report that the latest build on the OCX on their public page doesn't show any parks in the middle of the ocean