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Re: Different colors for ponts in a series ?


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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);

>

>

>

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