Ohm's Law Calculator

[The Buzzard]

Hello to All,

I finally finished this Ohm's Law Calculator and I seem to be pleased with the results, However the program size has me bothered. When using vector image on more complex entities such as circles and text, It creates much larger than expected lists. I tried to duplicate the image with MSLIDE, But I have no control over the image size that way and cannot duplicate the same results as vector image.

Anyway, I am posting it just the same for feed back.

For loading instructions, See this link: http://www.cadtutor.net/forum/showth...n-this-archive

Revision List:

                                    *Revisions*
  Date      Change                                              Program     By
  06/12/09  Reduce program size by vector_image modification    OLCv2.lsp   AMB
  06/13/09  Add Divide by zero error function                   OLCv3.lsp   AMB
  06/13/09  Program now calculates remaining two values         OLCv3.lsp   AMB
  06/13/09  Remove Mode Tile Function                           OLCv3.lsp   AMB
  06/14/09  Add Imaginary Number calcs to square root           OLCv4.lsp   LM
  06/14/09  Program remembers last formula selection            OLCv4.lsp   AMB
  06/16/09  Remove OLC_DCO Output Function                      OLCv5.lsp   CAB
  06/16/09  Consolidate OLC_CAI & OLC_DCO functions             OLCv5.lsp   CAB
  06/16/09  Remove all redundant programming                    OLCv5.lsp   CAB
  06/16/09  Improved variable localization                      OLCv5.lsp   CAB
  06/16/09  Improved programming for input errors               OLCv5.lsp   CAB
  06/16/09  Added OLC_T2N Error Function                        OLCv5.lsp   CAB
  06/16/09  Modified OLC_RAC Reset Function                     OLCv5.lsp   CAB

VERSION 2 POSTED 06/12/09
VERSION 3 POSTED 06/13/09
VERSION 4 POSTED 06/14/09
VERSION 5 POSTED 06/16/09

I would like to express my thanks to the following individuals for their help and suggestions. A big thanks to Lee Mac, CAB, SEANT, David Bethel.
From their contributions to this thread I was able to complete this program. I cannot say enough about these wonderful people that are always ready willing and able to give their time. It is my hope that others will find this program useful from a practical purpose or as a learning model.

Please enjoy the program,
The Buzzard

[Lee Mac]

Woww... haven't tried the code just yet, but just looking at the LISP: So Many Numbers....you sure do love your vector images.

If the posted pic is anything to go by, then superb work Buzzard

Lee

[The Buzzard]

Woww... haven't tried the code just yet, but just looking at the LISP: So Many Numbers....you sure do love your vector images.

If the posted pic is anything to go by, then superb work Buzzard

Lee

Thank you Lee,

I do like the fact that I do not have to deal with slides when it comes to vector image. The size of the program without using it is next to nothing as compared to putting the image in. Just does not seem worth it. MSLIDE is a real pain in another sense.

Anyway the program works well.

[CAB]

Your DCL is a thing of beauty!

I would approach the lisp & vector coding a bit differently, but it gets the job done.

[The Buzzard]

Your DCL is a thing of beauty!

I would approach the lisp & vector coding a bit differently, but it gets the job done.

Thanks CAB,

What would you suggest in terms of a different approach?

[CAB]

For the vectors I would separate the circle/background into one list and make each cell
into separate list. In this way you can feed the list to the vector_image with each group
and just change the color for the group you want to use red on.

For the operation of the user entry I would have a CLEAR button that blanked all 4 edit boxes.
Then the action would react to the ENTER key. If there was only one value entered, do nothing.
If there were two values entered & would solve for the two missing values.
That's just my approach. Nothing wrong with yours.


PS You could turn two formula red to match the results.

[The Buzzard]

For the vectors I would separate the circle/background into one list and make each cell
into separate list. In this way you can feed the list to the vector_image with each group
and just change the color for the group you want to use red on.

For the operation of the user entry I would have a CLEAR button that blanked all 4 edit boxes.
Then the action would react to the ENTER key. If there was only one value entered, do nothing.
If there were two values entered & would solve for the two missing values.
That's just my approach. Nothing wrong with yours.


PS You could turn two formula red to match the results.

I think I know what you mean. I would have to mess with it a bit to get the feel for it, But that make so much sense.

I will give that a shot and see what happens.

Thanks for the advise.

[The Buzzard]

I think I know what you mean. I would have to mess with it a bit to get the feel for it, But that make so much sense.

I will give that a shot and see what happens.

Thanks for the advise.

CAB,

I did a test using the wheel with the text as the base image. Then I use only the selected red text for each selected image as the conditionals and seems to work well. I just need to finish it off. Will post the new version over the weekend.

With regard to the program operation, I would need to study that much further.

Great Tip on the images, That will reduce the program size dramatically.

Thanks again,
The Buzzard

[The Buzzard]

CAB,

I did a test using the wheel with the text as the base image. Then I use only the selected red text for each selected image as the conditionals and seems to work well. I just need to finish it off. Will post the new version over the weekend.

With regard to the program operation, I would need to study that much further.

Great Tip on the images, That will reduce the program size dramatically.

Thanks again,
The Buzzard

Attention to All,

CAB introduced to me a fix for the vector image eliminating the image redundancy and thus producing a much smaller program.

The programs original size was 582KB reduced down to 119KB.
What a major difference that is.

The revised files have been uploaded to the first post, So you can get the program there.

Thank You CAB and to All Enjoy!
The Buzzard

[Lee Mac]

Very nice Buzzard, just been playing around with it

I love that dialog image, superb illustration - and many thanks for the mention in the "About" dialog - I feel honoured

1 thing you might want to consider though, perhaps include a line of code to account for divide by zero errors with perhaps an error tile to notify the user if they enter, for example, 0 Ohms in formula 1.

Just a thought

Lee