The plotting error when viewing the worksheet in MapleNET is known. It has to do with the version of MapleNET that is being used. This will go away once it is updated. Scott

Anyone interested in see this application written by Prof Josef Betten, you can find it here on the Maplesoft Application Center. Scott

I am not 100% sure, but it is possible that Josef Betten may be bringing to everyone's attention that he has written a new application concerning this topic. This application can be found here. Scott

I have seen this similar bug come up a few times on Win XP. I find just closing the Maple 11 worksheet and opening it clears the problem. I believe this has been brought to Technical Support's attention. If you have a configuration that has this happening often or every time, I would suggest contacting Maplesoft Technical Support. Scott

Maple for Windows and Linux uses a Java that is installed within its Maple folder so there won't be a problem of having different Javas on your computer. It is only on the Macs where Maple uses the system Java. Please note for Windows, the default for Maple worksheets will be the one most recently installed. So if you just installed Maple 9.5, Windows will choose 9.5 as your default. But Maple 11 has a tool in the start menu to change that back to Maple 11 (or you can use the normal Windows File Association menu to change this). Scott

Without the graph theory package, it becomes a bit more difficult. For the same adjacency matrix that Robert used: M := <<0, 1, 0, 1>|<1, 0, 0, 1>|<0, 0, 0, 1>|<1, 1, 1, 0>>; You would have to find all the places where there is a number 1. temp:=rtable_elems(M): pts:=map(i->{lhs(i)},temp); From there you can create the graph G:=networks[graph]({1,2,3,4},pts): networks[draw](G); I hope this helps get a start on the problem. Scott

napaJleJlenuneDk0, I wouldn't suggest doing the replacing the Java folder technique because there may have been other fixes that are Vista specific that are found in Maple 11 for Vista (along with the point that the Vista install for Maple 11 is Maple 11.01 which would save you a step). Scott

There is an option, filledregions, with Maple 11 for implicitplots, contourplots, and listcontplots which possibly can do some of what you are looking for. Of course I cannot find the option in the plotbuilder so that will not solve the point and click solution.

plots:-implicitplot([x^2+y^2+z^2 = 1, (x+(1/2)*z)^2/(5/4)+y^2 = 1/3, z],
 x = -1 .. 1, y = -1 .. 1, gridrefine = 3, scaling = constrained, filledregions);

Scott

You will notice that there are two types of installers (this might not be obvious depending what version of Maple 10 you have) and two types of updaters. For the update files you will notice there is one for Mac OSX (PPC) and one for Mac OSX (Intel). For Maple 10.04 or later there are also two installers, one for PPC or Intel. If you have an installer for Maple 10.03 or earlier, you will need to contact Maplesoft Technical Support or Customer Service to get a download for the Intel version. Also, the PPC update is for the PPC installation and the Intel update is for the Intel installation only. My mixing the two up will cause this and other errors. Scott

Which installer did you use and which update did you apply? Scott

Could you give us some more information on your computer and this situation? The important questions that we would need to help you on this issue are:

• Are you on a Mac PPC or Mac Intel?
• Do you have Java installed on your Mac?
• Are you getting this error when running the installer or when trying to run the program after installation?
• What installer are you running?

I believe this often comes up when users install the PPC version of Maple 10 on a Mac Intel then apply the Mac Intel patch (which isn't suppose to be applied to the PPC installation). If this was done, the easiest fix is to uninstall Maple, and install the correct version for your operating system. If you continue to have problems, I suggest contacting Maplesoft Technical Support. Scott

Setting the variable Digits to 14 both tells Maple to display 14 significant digits but it also keeps track of 14 digits during some numeric procedures. To get more information on this, check the help page ?Digits. On an aside, if you come across some of these procedures or Maple keywords that you don't understand, in Maple I place my cursor on the word and press F2. This launches Help and searches for that word. Scott

Setting the variable Digits to 14 both tells Maple to display 14 significant digits but it also keeps track of 14 digits during some numeric procedures. To get more information on this, check the help page ?Digits. On an aside, if you come across some of these procedures or Maple keywords that you don't understand, in Maple I place my cursor on the word and press F2. This launches Help and searches for that word. Scott

If you had accidentally posted a blog that you would like to remove, I would suggest giving Will an message asking it to be removed. If you wish to do this, it is best to ask before the post has be responded to since deleting the post would mean loosing the discussion that comes as a result (and many of these discussions are interesting to people like me who are learning more about Maple). Scott

It would be good to pass bug reports to Technical Support directly. This would give you a better chance of getting a quick response and will give Technical Support a chance to place the bug report in the system. As for this "bug" report, it seems to come down to variable choices that are being made. As in the variable 'a' from the input 'a=5' is not necessarily the same as the local 'a' that you choose for your procedure. As a result lhs(Q)='a' will come out as false. If you had changed your procedure to have a different local variable, the procedure will work as expected. If this isn't possible, change the if statement to check if convert(lhs(Q), string) = "a" Edit: One way to see this is through this example: >a:=5: >testproc:=proc(b) local a; a+b; end proc: >testproc(5); a+5 And looking over your comments I had noticed that you had an error once concerning 'invalid left hand side in assignment'. This is likely due to 'a' being assigned to 5 in the worksheet (not including any cases within the procedure when it was a local variable). Scott