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That is more faces than I have ever seen in a post.
Eigenmath is an open source project and the source code can be found here: https://github.com/gbl08ma/eigenmath
I am sure a patch would speed up your feature request list.
I am not sure what "Strong RAM" means.
Do you mean lots of ram?
Compared to some other calculators from TI the amount of ram the casio prizm has is much greater.
I do not want to derail the discussion with talk of utilities as gbl08ma has a separate thread for that.
I would like to point out that if you want jpeg viewing I would recommend you use TJpgDec instead of picojpeg. It seems that when people want a lightweight jpeg decoder many jump to picojpeg but TjpgDec is even more lightweight and faster see http://elm-chan.org/fsw/tjpgd/00index.html
Ronald G V A (MD-1032) wrote:
gbl08ma, can you add ImageViewer to the Utilities add-in? That would be perfect Smile !

I can't even compile the ImageViewer to work as well as before (since I updated GCC, certain things appear to compile in a different way), it no longer decodes 4:4:4 JPEGs properly. Also, the image viewer must be compiled with optimization for speed, while Utilities is compiled with optimization for size. Furthermore, Utilities is a finished project.

And I know I tried TJpgDec back when I started development of the JPEG viewer, but for some reason ended up not using it. I could not make it work, or it was too slow, can't remember what happened exactly to make me go with picojpeg. Right now the most sensible action would be to develop an add-in that reads both PNGs and JPEG images. However, I am not starting any new Prizm projects now, the roadmap is to release a stable version of Eigenmath and be done with Prizm development.

Anyway, back on topic.

EDIT: here's a video demoing session saving and loading.
http://tny.im/esls
As you can see it's not very slow, but I have added the option to disable it if you really don't want it.
Maybe you could patch the CPU speed to eigenmath in orther to make it work much faster, no ?
Overclocking kills calculators and add-ins should not do it automatically.
ProgrammerNerd wrote:
That is more faces than I have ever seen in a post.
Eigenmath is an open source project and the source code can be found here: https://github.com/gbl08ma/eigenmath
I am sure a patch would speed up your feature request list.
I am not sure what "Strong RAM" means.
Do you mean lots of ram?
Compared to some other calculators from TI the amount of ram the casio prizm has is much greater.
I do not want to derail the discussion with talk of utilities as gbl08ma has a separate thread for that.
I would like to point out that if you want jpeg viewing I would recommend you use TJpgDec instead of picojpeg. It seems that when people want a lightweight jpeg decoder many jump to picojpeg but TjpgDec is even more lightweight and faster see http://elm-chan.org/fsw/tjpgd/00index.html


Is there any problem with my faces, nerd?? Smile
I'm talking with a great developer as glb08ma not with you, and Strong Ram means a enough ram to support great add-ins Very Happy
Please don't compare with average calculators. PRIZM is a great calculators as, ClassPad 2, HP Prime & NSpire CX CAS Smile
I can talk everything that I want, you're not a moderator or the administrator. Don't be angry because nobody use your PNGViewer, you know what? It's very mediocre and it's buggy Smile

gbl08ma wrote:
Overclocking kills calculators and add-ins should not do it automatically.


:O !! Hey bro Sad I have my PRIZM overclocked everyday and everytime with Utilities at 94.3 MHz Sad So you mean that it will kill my calculator soon?? :'(
First, don't double post. Use the little edit button if its been less than 24 hours since you last posted in the same topic.
Next, Overclocking is bad for the calculator in the long run. The reason that the calculators are underclocked in the first place is to save battery power and also so that the calculations are more accurate. I think that's it.
Quote:
PRIZM is a great calculators as, ClassPad 2, HP Prime & NSpire CX CAS

Assuming "ClassPad 2" refers to the fx-CP400 II, sorry, that's a mediocre calculator, little more than a decade-old CP300/330 with a color screen...
The firmware makes little use of color, the math abilities aren't much better than those of the CP300/330.
The slowness is annoying for some high school level simple algorithms: all of the TI-Z80, TI-68k, Nspire, Prizm, 50g, Prime series complete one particular algorithm in 3 s at worse, but the fx-CP400 needs 400s in exact mode (two orders of magnitude slower !), or something like 40s in approx mode (an order of magnitude slower).
The hardware characteristics are worse than a '2007 Nspire Clickpad.
And the worst thing in the fx-CP400, adding insult to injury, is the horrendously expensive price tag, even higher than that of a Prime or Nspire CX...

BTW, it's not because he isn't, or I am not, a moderator / administrator that you can talk everything you want to him or me Wink
In order to compete with the TI-84 Plus C Silver Edition in terms of BASIC math speed, the ClassPad II would need to be overclocked to 4.3 GHz.


When your 200 (?) MHz calc can't even get close to the speed of a bottlenecked 15 MHz Z80 color calc during equation solving, there really is a serious problem.
Ronald G V A (MD-1032) wrote:

Is there any problem with my faces, nerd?? Smile
I'm talking with a great developer as glb08ma not with you,

Wrong. This is a forum, which means the discussion is public. If you want to have a private discussion, use email or the PM system.

Ronald G V A (MD-1032) wrote:
I can talk everything that I want, you're not a moderator or the administrator. Don't be angry because nobody use your PNGViewer, you know what? It's very mediocre and it's buggy Smile

I don't even know what you mean by your first sentence, please learn to use correct English grammar. That said, administrator here, and you actually can't say whatever pops into your head. We have both rules and guidelines about how discussions on Cemetech should proceed, and among those we suggest heavily that you not be rude.


Also, I've combined your posts. In the future, please refrain from double posting in such a short span of time.
elfprince13 wrote:
Ronald G V A (MD-1032) wrote:

Is there any problem with my faces, nerd?? Smile
I'm talking with a great developer as glb08ma not with you,

Wrong. This is a forum, which means the discussion is public. If you want to have a private discussion, use email or the PM system.

Ronald G V A (MD-1032) wrote:
I can talk everything that I want, you're not a moderator or the administrator. Don't be angry because nobody use your PNGViewer, you know what? It's very mediocre and it's buggy Smile

I don't even know what you mean by your first sentence, please learn to use correct English grammar. That said, administrator here, and you actually can't say whatever pops into your head. We have both rules and guidelines about how discussions on Cemetech should proceed, and among those we suggest heavily that you not be rude.


Also, I've combined your posts. In the future, please refrain from double posting in such a short span of time.


Ok So now everybody hates me :S Wow I didn't know you were a good friend of the nerd...
Wow this is more activity than I have seen in one day for a while in the prizm section.
I will be responding to replies that I have something to say in reverse order (most recent first).

Ronald G V A (MD-1032): I wonder why. (That being a sarcastic remark)

DJ_O and Lionel Debroux: The slowness may be a result of poor software not poor hardware. What cpu does it have? I'd imagine the same or similar to what is in the prizm.

ordelore: You are right about battery life but there should be no difference for accuracy. The only instance I have encountered where clock speed affects accuracy is running ADCs at a higher clock speed decreased resolution.

Ronald G V A (MD-1032): I was not referring to your face which I have never seen so therefore I cannot make conclusions on that. You used lots of "emotions" in your post. Too many in my personal opinion. This is just a nitpick so lets not waste lots of time on this. Also the casio prizm has enough ram for great add-ins that I and others have made. Maybe you have not looked enough. Also calling the TI calculators "average" really depends on your perception. They are average in the sense that lots of people own them due to the fact that TI encourages schools to use their calculators. However in hardware wise the most commonly used TI calculators (83 and 84 series) are far below average in hardware. Remember when people have a monopoly there is no need to innovate. I understand that TI does not have complete monopoly but they close to having one. How else can you sell something based on a z80 and a low resolution monochrome screen? On the plus side we are free to vote with our wallets and buy better calculators. Also you insult me then put a smiley face. I do not know what to think. If my program does have a bug please send me the file that causes the bug and steps to reproduce the problem. Please post that in my thread so we do not further derail this thread. Also what do you mean by nobody? On the cemetech archives my png viewer has been downloaded 83 times as of today. 83!=nobody. Also overclocking only works on some prizms.

gbl08ma: That is quite strange. I have had issues of picojpeg working only with certain compilers. I solved my problem by switching to TJpgDec. Anyways I will try adding TJpgDec to my image viewer and we will see how well it works. The saving feature does look very good. Very nice work.
I know this is not the topic of the thread, but since the thread is mine and has gone offtopic already, it's good to see some activity (though flamebaity) in the almost-forgotten Prizm section, and these things have to be discussed somewhere, I thought I could leave some things clear, for future reference:
- Overclocking is bad, but to explain why, let me put things in another perspective: the Prizm comes clocked at 58 MHz, not just to save battery power, but also to ensure the CPU can cool itself passively, and because that's the speed CPU peripherals, for example the flash memory, expect the CPU to be running at.
In fact, some (possibly a large portion) Prizms can't be overclocked to 94.3 MHz. On those, problems like flash read errors start to be noticed at lower speeds, usually ending in a system error or a instant reboot. And the others can't go above 94.3 MHz, or 101 MHz when connected through USB, indicating possible issues with power management. The hardware was not designed to handle the power the CPU consumes when running above 58 MHz, which may damage the CPU itself and other components of the board.
This explains why you should not always have your calculator at the maximum speed, and also explains why add-ins should not overclock automatically: if they do, they won't work on the calculators where overclock doesn't work correctly; additionally, battery will be spent more quickly, leaving users wondering why their calculator batteries are already empty two weeks after swapping them, when usually the batteries lasted for a month, or more.
On the other hand, I ran my Prizm overclocked to 94.3 MHz for over a year without problems of any kind (until it broke due to provably unrelated reasons). This anecdotal evidence is proof that, when it comes to overclocking any processing unit, "your mileage may vary", and enforcing a overclocking setting on users is just plain wrong.

- While it is true some Casio calculator models suffer from extreme slowness problems, discussion about it definitely doesn't belong in this thread. However, I'd like to leave the reminder that if a model is bad, you should vote with your money...

- This Eigenmath port and the official versions of Eigenmath, including the proprietary[1] ones for Mac OS X, lack functionality which is nowadays considered standard for a CAS. Now, please carefully look and note how I never said, in this thread or anywhere else, that Eigenmath was a CAS, and the Eigenmath creator, George Weigt, never said it either as far as I know. "Eigenmath is a symbolic math program for people who need to compute with symbols as well as numbers." If it is lacking some features, it's not my fault: you are paying nothing for it, I'm not entitled to give support for it (even though I often do it, voluntarily) and it's me who decides which features go in this port. It is free software under the GNU GPL v2, so of course feel free to fork it and distribute your super version under the terms of that license, as long as you please a) give credit and b) make clear that it's not my port, but a fork of it (you should probably contact me beforehand to make sure I'm OK with the way it is presented). Same applies for Utilities.

- ProgrammerNerd is a developer as good or better than me, and in fact has helped me optimize both Utilities and Eigenmath. And taking a reasonable stance doesn't indicate friendship with anybody.

- Doesn't this forum have some rule against the excessive use of smileys? If it doesn't, it's understandable, it means it never had to deal with certain kinds of writing styles.

As a final note, I am nobody to discuss the rules and the actions of moderators and admins, but if I was a moderator here, some user(s) would be banned and some post(s) deleted or moved to another thread (my own included) already.

[1] or perhaps no longer, since there appears to be an updated source ZIP with the "shell-mode" edition here: http://gweigt.net/src.zip . The license is unknown. I should probably update the About screen of my port.
Hey, can you tell me how many seconds does eigenmath take (in average) to solve a derivative or an integral ? Does it give the result right away or can it take over 10seconds for a complicated function ?
How much new fonctionnalities from SIMB do you think you could add without making eigenmath slow ? Mabe you couldadd somevery important fonctionnalities to eigenmath for the 1.0 version Smile
Thanks and congratulations !! what you did from the first version to beta8 is just great !! Wink
jpto wrote:
Hey, can you tell me how many seconds does eigenmath take (in average) to solve a derivative or an integral ? Does it give the result right away or can it take over 10seconds for a complicated function ?

It varies, why don't you see for yourself?

Quote:
How much new fonctionnalities from SIMB do you think you could add without making eigenmath slow ? Mabe you couldadd somevery important fonctionnalities to eigenmath for the 1.0 version Smile

As I said it's very hard to port things from SMIB because it is based on an earlier version of Eigenmath and its functions are usually much more resource-intensive. Adding complex things from it requires that dependencies be added too, which increases the g3a size (but that's not the main problem) and reduces the amount of RAM available for variables, command execution and display (and that's the main problem).
Also, a large portion of SMIB is based on built-in scripting, which can't be used on this port due to the small symbol table (you'll notice that the more you put on the startup script, for example, the less memory you have for operations).
Ok, I understand ... Thanks for your amazing job !!! Smile
Is there any way to add a limit solver from an other CAS (Xcas, Sage, Mapple ...) to Eigenmath ?
Too whoever created this port!

My friend and i who both have the cg20 just found out that there are no restrictions for using Cas type systems for calculators on our final in Calculus 1.

We both tried to find some cheap ti89's, but we decided to take one quick look if sombody had made something like this program for the cg20.

Short story short, we found this forum and the dl link for the software. Now we both have Eigenmath, and it is awesome!!

Thank you!!!
Anyone know how you kan find the determinant for a matrix in Eigenmath? I googled it but I didn't get it to work. :/
Use the "det" command.

From the Eigenmath manual:
Quote:
det

det(m) returns the determinant of matrix m.
gbl08ma wrote:
Use the "det" command.

From the Eigenmath manual:
Quote:
det

det(m) returns the determinant of matrix m.


Yepp and according to the site I was looking on it said to write your matrix like ((1,2,3),(3,4,5),(6,7,Cool)
So I tried "det((1,2,3),(3,4,5),(6,7,Cool) but it didn't work... but I guess I am doing it wrong? Razz
  
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