Tag: Transformations

Suppose I have an XYSeries dataset. For this example, Y is a temperature value in Celsius.

The XYSeries without modification I will call raw space. I assume that there is some matrix stack that transforms my “raw space” data series to screen space (the actual pixel on the screen).

Basic Point Transform assumption from my limited Graphics experience:
(Raw Space -> View Space (axis transforms etc) -> Culled Space (culled and interpolated points) -> Screen Space (positioned properly on the screen))

Now all is well if I am just running this graph in Celsius, but perhaps my user wants to change the Y axis to Fahrenheit. For maximum speed I want to generate a transform to edit the dataset, creating an extra space which I will call “Transformed Space”

(Raw Space -> Transformed Space -> View Space -> Culled Space -> Screen Space)

The matrix transform to Fahrenheit (Transformed Space) would be:

| 1   0    0 | | x |  
| 0  1.8  32 | | y |
| 0   0    1 | | 1 |

Is it possible to build transforms like this in Scichart or a partial matrices approach like in WPF? Or do I need to loop through and change my raw series every time the units change?

Thank You,
Nicholas Louks