The problem was likely because the images you tried to upload were larger than 1024x768 which was the maximum resolution allowed by the system. I just removed that restriction. It will stay like that until we see abuse of the abilities. ____ William Spaetzel Applications Developer, Maplesoft

We do plan to give certain members of the community special privileges on MaplePrimes. More details on that will be coming soon. However, the only permission level that has the ability to edit comments that have replies is administrator. We will be keeping that level to a very small number (Currently Tom 4 and I). ____ William Spaetzel Applications Developer, Maplesoft

Unfortunatley, it isn't currently possible for me to modify the site to allow users to always edit their comments. It may be possible in a future version of Drupal. I will look into it. However, I would like to say again. That I think the best way to edit your comment is by replying to it. That way if people read your comment and then come back to it, they can easily see that you have made an update. Otherwise, they might not be able to tell when a change has been made. ____ William Spaetzel Applications Developer, Maplesoft

Thanks for pointing out the problem with my post. This has been fixed. I will look into adding <c> as an appreviation of <code> ____ William Spaetzel Applications Developer, Maplesoft

MaplePrimes is set up to remove the style attribute from HTML tags. This is to prevent people from creating posts that seriously destroy the layout of the site. I can see how this causes problems when posting Maple code. I will look into fixing that. ____ William Spaetzel Applications Developer, Maplesoft

We have asked Laurent to reply as soon as he gets back to the office. For now, Tom has added a reply. We defniitely agree with what you are saying. Turnign his negative comment into a positive thread is very important. ____ William Spaetzel Applications Developer, Maplesoft

Thanks for sharing that. I had no idea that so much work went into that feature. Is there a chance that you could share some screenshots of early versions of the pallettes? ____ William Spaetzel Applications Developer, Maplesoft

Thanks for pointing that out. I've removed the 2nd strong ____ William Spaetzel Applications Developer, Maplesoft

I just discovered that Lambda the Ultimate also is using Drupal to run their site. I will add <b> and <i>, is there any other tags that you would like? ____ William Spaetzel Applications Developer, Maplesoft

We never said that Singular Planet is a wiki. Tom did say that it is "Wiki-like" in that many people can contribute to the book in a freeform style. We are looking into adding a proper wiki system to MaplePrimes. We hope that Singular Planet can be useful as it is now. I'll let Tom reply about the topic of the book. ____ William Spaetzel Applications Developer, Maplesoft

I am curious, did you create this with the Maplet builder? ____ William Spaetzel Applications Developer, Maplesoft

Are you asking for a way to use // as a way to define a comment in Maple? ____ William Spaetzel Applications Developer, Maplesoft

You can use plots[display] to show multiple plots all in one plot. Below I show combining your odeplot as well as a vertical line.

> odeplot := plots[odeplot](solution,[[t, 100 * s(t), linestyle = DASH], [t, 100 * c, linestyle = DOT], [t, f(t), linestyle = SOLID], [t, h(t), linestyle = DASHDOT]], 0..20, title="calculation of cost", legend=["100*s(t)", "100*c", "f(t): total cost", "h(t): expense"]):
line := PLOT(CURVES([[5, 0], [5, 10]]),COLOR(RGB,1,0,0)):

> plots[display]( odeplot, line );

>

This post generated using the online HTML conversion tool
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I thought it might be useful to attach the HTML export of the worksheet. I created this with the new MaplePrimes File Manager:

> restart;

> with (ImageTools);

> img := Read ("galileo.jpg");

> g_img := ToGrayscale (img);

> Gx := Matrix ([[-1,0,1],[-2,0,2],[-1,0,1]]);

> Gy := Matrix ([[1,2,1], [0,0,0],[-1,-2,-1]]);

> img_x := Convolution (g_img, Gx);
img_y := Convolution (g_img, Gy);

> edge := Array (abs (img_x) + abs (img_y), datatype=float[8]);

> min_v, max_v := rtable_scanblock (edge, [rtable_dims (edge)], 'Minimum', 'Maximum');
delta_v := max_v - min_v;
img_edge := Array ((edge-min_v)/delta_v, order=C_order, datatype=float[8]);

> Write ("edge.jpg", img_edge);

>

This post was generated using the MaplePrimes File Manager

View 1_edge_detection.mw on MapleNet or Download 1_edge_detection.mw
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Hello, Could you please post more information about the specific problem that you are having creating a Maplet. This should help the members to solve your problem. ____ William Spaetzel Applications Developer, Maplesoft