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3D Surface: 3 axes of different scale?

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  • R Offline
    R Offline
    RingAndReed
    wrote on last edited by RingAndReed
    #1

    There's probably a documentation page for this somewhere, but I don't even know where to start looking. I don't think my own code will be of any use here, the screen-shot should say it all.

    I'm using a Q3DSurface with QSurface3DSeries (nearly copy-past from the 3D Chart Example) but my data set is thousands of points ranging from x=[-3.2, 3.2] y=[0.0, 21.6] and z=[0.0, 1.0]. All these ranges represent millimetre measurements.

    Thing is, the axes don't seem to value millimetres the same way! The x-range is only ~6mm and yet it's much longer than the y-range of ~21 mm. I have even tried flipping x into y or into z, but the distortion between axes remains.

    Is there any way to be sure that an increment of 0.1 in x has the same length as 0.1 in y and same length as 0.1 in z?

    Thanks!
    0_1501636664084_uneven_axes_jpg.jpg

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      The Qt Data Visualisation module being recently open sourced, I'd recommend bringing your question to the interest mailing list. You'll find there Qt's developers/maintainers. This forum is more user oriented.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      R 1 Reply Last reply
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      • SGaistS SGaist

        Hi,

        The Qt Data Visualisation module being recently open sourced, I'd recommend bringing your question to the interest mailing list. You'll find there Qt's developers/maintainers. This forum is more user oriented.

        R Offline
        R Offline
        RingAndReed
        wrote on last edited by
        #3

        @SGaist
        OK, sorry about that.
        I thought the was a forum for Qt Development as per the header:
        Home / Qt Development / General and Desktop

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          No need to be sorry. There's no problem with asking question about internals of Qt here. However, there are some modules that are either too young to be well known or some are commercial only so you are less likely to get an answer here.

          Well, it's rather "developing with Qt".

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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