Re: Different colors for ponts in a series ?

[User (Legacy)]

Hello, I am no expert with this, but I looked at it and saw that the problem 

seems to be with your use of the OpenDataEx.  The way the code looks 

(without a call to MultipleColors property), you are only affecting the 

series objects.  If you change the 

>  for(i=0; i<50; i++) 

>  { 

>   if (i<25) 

>    m_pChartFX->Color[i] = RGB(255,0,0); 

>   else 

>    m_pChartFX->Color[i] = RGB(0,0,255); 

> 

>  } 

to 

>  for(i=0; i<50; i++) 

>  { 

>   if (i<1) 

>    m_pChartFX->Color[i] = RGB(255,0,0); 

>   else 

>    m_pChartFX->Color[i] = RGB(0,0,255); 

> 

>  } 

you will see what I mean.  It will change the second series to RGB(0, 0, 

255). 

On the other hand, if you set MultipleColors to true, then the 

OpenDataEx(COD_COLORS, n, 0) will open the chart with 'n' being the number 

of points you have.  You can create neat things like Christmas Tree Charts 

(see code below).  I doubt this is the correct way to do this, but I thought 

you might be interested in it.  Sorry I couldn't be more help (I tried 

something like this when I first began to play with Chart FX.  I wanted to 

highlight the 

points the user selected, but it didn't work as well as I wanted). 

-- 

Josh Eanes 

 int i; 

//////////////////////////////////////////////////////////////////////////// 

 //// 

 // load each data points with X,Y values 

//////////////////////////////////////////////////////////////////////////// 

 //// 

 m_pChartFX->put_MultipleColors(TRUE); 

 m_pChartFX->OpenDataEx(COD_XVALUES, 2, 50); 

 for(i=0; i<50; i++) 

 { 

  m_pChartFX->ValueEx[0][i] = i; 

  m_pChartFX->XValueEx[0][i] = i; 

  m_pChartFX->ValueEx[1][i] = 2*i; 

  m_pChartFX->XValueEx[1][i] = i; 

 } 

 m_pChartFX->CloseData(COD_XVALUES); 

//////////////////////////////////////////////////////////////////////////// 

 //// 

 // set colors for each data point 

//////////////////////////////////////////////////////////////////////////// 

 //// 

 m_pChartFX->MultipleColors = true; 

 m_pChartFX->OpenDataEx(COD_COLORS, 8, 0); 

 for(i=0; i<8; i++) 

 { 

// create christmas tree effect- works much better on a series with base 

color transparent 

  if (i == 0) 

   m_pChartFX->put_Color(i, RGB(255,0,0)); 

  if (i == 1) 

   m_pChartFX->put_Color(i, RGB(0,0,255)); 

  if (i == 2) 

   m_pChartFX->put_Color(i, RGB(0,255,0)); 

  if (i == 3) 

   m_pChartFX->put_Color(i, RGB(0,0,0)); 

  if (i == 4) 

   m_pChartFX->put_Color(i, RGB(255,255,255)); 

  if (i == 5) 

   m_pChartFX->put_Color(i, RGB(120,120,120)); 

  if (i == 6) 

   m_pChartFX->put_Color(i, RGB(120,255,0)); 

  if (i == 7) 

   m_pChartFX->put_Color(i, RGB(125,125,255)); 

 } 

 m_pChartFX->CloseData(COD_COLORS); 

anonymous <anonymous@email.net> wrote in message 

news:DE0379D14694D211B4CE00609770710D035215@sftfx-221.wamnet.net... 

> I'm using an XY chart and would like to have one series with 2 different 

> colors.  I followed the book example (p78) and it still doesnt work.  Any 

> ideas? 

> 

> my code: 

>  int i; 

> 

//////////////////////////////////////////////////////////////////////////// 

> //// 

> // load each data points with X,Y values 

> 

//////////////////////////////////////////////////////////////////////////// 

> //// 

>  m_pChartFX->OpenDataEx(COD_XVALUES, 2, 50); 

>  for(i=0; i<50; i++) 

>  { 

>   m_pChartFX->ValueEx[0][i] = i*i; 

>   m_pChartFX->XValueEx[0][i] = i; 

> 

>   m_pChartFX->ValueEx[1][i] = 2*i*i; 

>   m_pChartFX->XValueEx[1][i] = i; 

> 

>  } 

>  m_pChartFX->CloseData(COD_XVALUES); 

> 

> 

> 

//////////////////////////////////////////////////////////////////////////// 

> //// 

> // set colors for each data point 

> 

//////////////////////////////////////////////////////////////////////////// 

> //// 

>  m_pChartFX->MultipleColors = true; 

>  m_pChartFX->OpenDataEx(COD_COLORS, 2, 0); 

> 

>  for(i=0; i<50; i++) 

>  { 

>   if (i<25) 

>    m_pChartFX->Color[i] = RGB(255,0,0); 

>   else 

>    m_pChartFX->Color[i] = RGB(0,0,255); 

> 

>  } 

>  m_pChartFX->CloseData(COD_COLORS); 

> 

> 

>