PureBasic Forums - English

Posted: **Thu Jul 26, 2018 2:42 am**

I am building more knowledge on PB and am having a lot of fun with it.

I have an issue with using the DataSection. I have this datasection:

Code: Select all

  DataSection
    NumberLives:
    Data.i 100000,99362,99317,99289,99266,99249,99234,99219,99206,99194,99184,99174,99164,99151,99131,99100,99059,99006,98941,98863,98771
    Data.i 98663,98542,98410,98272,98131,97989,97844,97698,97547,97393,97235,97072,96906,96736,96562,96383,96198,96006,95809,95603,95389
    Data.i 95164,94925,94671,94397,94102,93784,93436,93054,92632,92168,91659,91103,90501,89851,89150,88396,87588,86724,85802,84819,83772
    Data.i 82663,81498,80277,78995,77644,76216,74704,73100,71393,69574,67640,65592,63426,61130,58693,56117,53406,50564,47585,44475,41251
    Data.i 37939,34566,31158,27748,24374,21079,17915,14934,12186,9714,7549,5706,4193,2996,2083,1410,932,600,376,228
    Data.i 124,76,42,22,11,5,2,1,0,0
  EndDataSection
  DataSection
    AgeTo:
    Data.d 76.15,75.63,74.67,73.69,72.71,71.72,70.73,69.74,68.75,67.76,66.76,65.77,64.78,63.79,62.80,61.82,60.84,59.88,58.91,57.96
    Data.d 57.01,56.08,55.14,54.22,53.29,52.37,51.44,50.52,49.59,48.67,47.75,46.82,45.90,44.98,44.06,43.14,42.22,41.30,40.38,39.46
    Data.d 38.54,37.63,36.72,35.81,34.90,34.00,33.11,32.22,31.34,30.46,29.60,28.75,27.90,27.07,26.25,25.43,24.63,23.83,23.05,22.27
    Data.d 21.51,20.75,20.00,19.27,18.53,17.81,17.09,16.38,15.68,14.98,14.30,13.63,12.97,12.33,11.70,11.08,10.48,9.89,9.33,8.77
    Data.d 8.24,7.72,7.23,6.75,6.30,5.87,5.45,5.06,4.69,4.35,4.03,3.73,3.46,3.21,2.99,2.80,2.63,2.48,2.34,2.22
    Data.d 2.11,2.00,1.89,1.79,1.69,1.59,1.50,1.41,1.33,1.25,1.17,1.10,1.03,0.96,0.89,0.83,0.77,0.71,0.66,0.61
  EndDataSection

I am accessing the data with this procedure:

Code: Select all

  ;- Global Variables
  Global NewList AgeFactor.i()
  Global NewList AgeExpectation.d()
  
  ;- Internal Procedures
  Procedure Init()
    
    Shared AgeFactor()
    Shared AgeExpectation()
    
    ClearList(AgeFactor())
    ClearList(AgeExpectation())
    
    Restore AgeTo
    
    For l = 0 To 10
      Read r5.d
      AddElement(AgeExpectation())
      AgeExpectation() = r5
    Next
    
    Restore NumberLives
    
    For l = 0 To 113
      Read r4.i
      AddElement(AgeFactor())
      AgeFactor() = r4
    Next
    
    ForEach AgeExpectation()
      Debug AgeExpectation()
    Next
    
  EndProcedure

The Debug results are horrendous and do not represent the the correct values for the Data.d part. The Data.i part works correctly and returns the correct values.

Can somebody advise me what I am doing wrong?

I am using PB5.6 in 64bit on MacOS.

Simon.

Posted: **Thu Jul 26, 2018 6:24 am**

I think you have results like 76.150000000000006 ?

This is normal. you have to Debug or View your double variable with format, like
this

Code: Select all

ForEach AgeExpectation()
  Debug StrD(AgeExpectation(), 2)
Next

Posted: **Thu Jul 26, 2018 6:31 am**

You have to specify the reading type:

Code: Select all

    
    For l = 0 To 10
      Read.d r5.d  ; <- Here!!
      AddElement(AgeExpectation())
      AgeExpectation() = r5
    Next

Code: Select all

    For l = 0 To 113
      Read.i r4.i
      AddElement(AgeFactor())
      AgeFactor() = r4
    Next

Edit: btw. you don't need Shared for AgeFactor() if you defined it as Global.

Posted: **Thu Jul 26, 2018 12:17 pm**

The actual answer I get is:

Code: Select all

4635058996805998592.0
4635022405059026944.0
4634954851064615936.0
4634885889695322112.0
4634816928326028288.0
4634747263269292032.0
4634677598212555776.0
4634607933155820544.0
4634538268099084288.0
4634468603042348032.0
4634398234298170368.0

The code I posted was after a lot of experiments and I had the original as this:

Code: Select all

    Restore AgeTo
    
    For l = 0 To 10
      Read r5.d
      AddElement(AgeExpectation())
      AgeExpectation() = r5
    Next
    
    Restore NumberLives
    
    For l = 0 To 113
      Read r4.i
      AddElement(AgeFactor())
      AgeFactor() = r4
    Next

The issue I am having is that instead of 76.15 (or an approximation) I am getting 4635058996805998592.0!

Posted: **Thu Jul 26, 2018 12:18 pm**

Please read STARGÅTE's post again.

Posted: **Thu Jul 26, 2018 12:33 pm**

I have read elsewhere on this forum (can't find it now) that there may be an issue with reading data in the 64bit version of PB.

Is that still true?

Posted: **Thu Jul 26, 2018 12:37 pm**

@NicTheQuick

Yes, I did. The post that I made with the results is after I changed it to

Code: Select all

    For l = 0 To 119
      Read r5.d
      AddElement(AgeExpectation())
      AgeExpectation() = r5
    Next

I have now changed it to:

Code: Select all

    Protected r4.i, r5.d
    ClearList(AgeFactor())
    ClearList(AgeExpectation())
    
    Restore AgeTo
    
    For l = 0 To 119
      Read r5
      AddElement(AgeExpectation())
      AgeExpectation() = r5
    Next
    
    Restore NumberLives
    
    For l = 0 To 113
      Read r4
      AddElement(AgeFactor())
      AgeFactor() = r4
    Next

Same result. Here is the first few lines of my output:

Code: Select all

4635058996805998592.00
4635022405059026944.00
4634954851064615936.00
4634885889695322112.00
4634816928326028288.00
4634747263269292032.00
4634677598212555776.00
4634607933155820544.00
4634538268099084288.00
4634468603042348032.00
4634398234298170368.00

This is using

Code: Select all

Debug StrD(AgeExpectation(), 2)

I am lost!

Posted: **Thu Jul 26, 2018 12:43 pm**

@simberr
What STARGÅTE and NicTheQuick trying to tell you that you should use the data type with Read
Like Read.d rd5.d

Posted: **Thu Jul 26, 2018 12:49 pm**

Ok, I have now solved the issue.

Now I have removed from all the data elements which are double the period ("."), converted them all to integers. When reading the item I divide the result by 100 which converts them back to their double originals.

My DataSection now looks like this:

Code: Select all

  DataSection
    NumberLives:
    Data.i 100000,99362,99317,99289,99266,99249,99234,99219,99206,99194,99184,99174,99164,99151,99131,99100,99059,99006,98941,98863,98771
    Data.i 98663,98542,98410,98272,98131,97989,97844,97698,97547,97393,97235,97072,96906,96736,96562,96383,96198,96006,95809,95603,95389
    Data.i 95164,94925,94671,94397,94102,93784,93436,93054,92632,92168,91659,91103,90501,89851,89150,88396,87588,86724,85802,84819,83772
    Data.i 82663,81498,80277,78995,77644,76216,74704,73100,71393,69574,67640,65592,63426,61130,58693,56117,53406,50564,47585,44475,41251
    Data.i 37939,34566,31158,27748,24374,21079,17915,14934,12186,9714,7549,5706,4193,2996,2083,1410,932,600,376,228
    Data.i 124,76,42,22,11,5,2,1,0,0
    AgeTo:
    Data.i 7615,7563,7467,7369,7271,7172,7073,6974,6875,6776
    Data.i 6676,6577,6478,6379,6280,6182,6084,5988,5891,5796
    Data.i 5701,5608,5514,5422,5329,5237,5144,5052,4959,4867
    Data.i 4775,4682,4590,4498,4406,4314,4222,4130,4038,3946
    Data.i 3854,3763,3672,3581,3490,3400,3311,3222,3134,3046
    Data.i 2960,2875,2790,2707,2625,2543,2463,2383,2305,2227
    Data.i 2151,2075,2000,1927,1853,1781,1709,1638,1568,1498
    Data.i 1430,1363,1297,1233,1170,1108,1048,989,933,877
    Data.i 824,772,723,675,630,587,545,506,469,435
    Data.i 403,373,346,321,299,280,263,248,234,222
    Data.i 211,200,189,179,169,159,150,141,133,125
    Data.i 117,110,103,096,089,083,077,071,066,061
  EndDataSection

And my reading code is now:

Code: Select all

    Restore AgeTo
    
    For l = 0 To 119
      Read r5.i
      AddElement(AgeExpectation())
      AgeExpectation() = r5 / 100
    Next

It works as expected.

I am still lost, however, as the Help file says that I can mix the data types within the DataSection and that does not appear to be true.

Can anybody throw any light on this?

Simon.

Posted: **Thu Jul 26, 2018 1:38 pm**

Code: Select all

Define Lives.i
Restore NumberLives
For I = 0 To 7
  Read Lives
  Debug Lives
Next

Define Age.d ; <- d
Restore AgeTo
For I = 0 To 7
  Read.d Age
  Debug StrD(Age, 2)
Next



  DataSection
    NumberLives:
    Data.i 1, 2, 3, 4
    Data.i 5, 6, 7, 8
  EndDataSection
  
  DataSection
    AgeTo:
    Data.d 76.15, 75.63, 74.67, 73.69, 72.71
    Data.d 123.456, 876.543, 99.99
  EndDataSection

Posted: **Thu Jul 26, 2018 2:02 pm**

simberr wrote:@NicTheQuick

Yes, I did.

Unfortunately you didn't read STARGÅTE's posting carefully enough. You tried

Code: Select all

Read r5.d

but STARGÅTE posted

Code: Select all

Read.d r5.d  ; <- Here!!

It's very important to use "Read.d r5.d" because otherwise Read defaults to Integer and this is causing all your troubles...

Posted: **Thu Jul 26, 2018 2:54 pm**

This happens enough that the compiler should throw an error for naked Read's.

Code: Select all

Read.i  <-- Allowed
Read    <-- Error

Posted: **Thu Jul 26, 2018 7:40 pm**

Oh, goodness!

I did miss that - so sorry.

I have now refactored the code as doubles and I am getting the correct responses now.

As I said in my first post, I am learning PB and trial and erroring every day!

Thanks to you all I am slowly getting there. Very happy at the moment.

Thank you all, again, for your patience.

Simon.

Posted: **Fri Jul 27, 2018 9:37 am**

Sometimes you just have not the right amount of caffeine in your bloodstream. Then it takes longer to understand.

Posted: **Fri Jul 27, 2018 12:37 pm**

NicTheQuick wrote:Sometimes you just have not the right amount of caffeine in your bloodstream. Then it takes longer to understand.

Or stay awake all night long and then read the postings again.
Untested but might help...

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DataSection and Reading Data items issue

DataSection and Reading Data items issue

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