Is there a default color table / colormap available in Qt?

Question

I can't seem to find a default or any provided colormap in Qt (5.7 in my case).

All I find is people generating their own color table such as:

QVector<QRgb> ctable;
for(int i = 0; i < 256; ++i)
{
    ctable.append(qRgb(i,i,i));
}

So is there any colormap available in Qt (as there is in matplotlib or matlab like here ?

Edit: a colormap to go with QImage::Format_Indexed8 image format and QImage::setColorTable()

A solution, as Qt does not provide any colormap:

I downloaded a colormap from AMA's link http://www.kennethmoreland.com/color-advice/black-body/black-body-table-byte-0256.csv

Then I read the file to generate my own colormap:

QVector<QRgb> ctable;

QFile file("black-body-table-byte-0128.csv");
if(!file.open(QIODevice::ReadOnly))
{
    QMessageBox::information(0, "error", file.errorString());
}

QTextStream in(&file);

while(!in.atEnd())
{
    QString line = in.readLine();    
    QStringList values = line.split(",");
    ctable.append(qRgb(values[1].toInt(), values[2].toInt(), values[3].toInt()));
}

file.close();

now ctable can be used as a colormap using:

QImage myImage;
myImage.setColorTable(ctable);

Answer 1

No, unfortunately Qt does not provide any. You will have to build it yourself. But there are plenty of sources with color table values for all sorts of needs.

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Edit: I successfully used some perceptually uniform colormaps from http://www.kennethmoreland.com for my data visualization needs.