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The first tab of the configuration dialog contains General Settings. It is divided into a few groups:

Image source

  • Refresh rate in s: select a minimal time between consecutive frames
  • Number of image sources:  a number of different image sources  from which images should be stitched
  • Map images to color channels: places images form different image sources to separate color channels
  • Interrupt on source errors: stops live image viewing on image source errors
  • Display specific for a source: store/retrieve display parameters for an each image source separately
  • Source timeout in ms: maximal time in milliseconds to wait for a response , e.g. from  Hidra or HTTP image sources

Statistics and 1d plots

  • Intensity scaling: applies the intensity display scaling to image statistics and 1d-plots
  • Calculate variance: perform calculations of variance from image pixel intensities

ZMQ security stream

  • Enabled: turns on sending the ZMQ security stream with basic information about the image, e.g. maximal intensity
  • Automatic port: selects a port number for the ZMQ security stream automatically
  • Port: defines a port number for the ZMQ security stream

Image display

  • Maximal memory buffer size: maximal frame number in the memory buffer
  • Mask pixels with NAN: store masked pixels as a float Not-A-Number (NAN)
  • Pixel masks with zero values: causes that zero pixel values of mask image are interpreted as masking
  • Keep original coordinates: causes the 2D-plot axes transforms with image transformation
  • Lazy image slider: plot a new image after the image slider is focused out
  • Aspect Ratio locked: sets the aspect ratio to 1:1 in the 2D-plot
  • Auto Down-Sample: turns on auto-down-sampling mode of pyqtgraph
  • Float type for intensity:  type to which intensity is converted if it is changed to float type
  • Accelerate memory buffer sum: speeds up calculation of an image sum for the memory buffer tool
  • Ranges and ROIs Colors: allows to defined colors of Ranges or ROIs selection frames. Colors are used cyclically


  • Show all ROIs values: calculates ROIs sum values for all ROI frames
  • Send ROIs values: sends ROIs sum values to LaVueController tango server
  • Single ROIs aliases: adds rois1, roi2, roi3, ... aliases if a number of rois is higher than their aliases


  • Store detector geometry for Angle/Q: store the detector geometry for the Angle/Q tool in the configuration settings
  • Geometry form a source: fetch metadata parameters describing detector geometry from the image source
  • Display extension refresh time in s: Minimum refresh time for display extensions
  • Parameter polling interval in s: time in seconds between read-outs of detector tango attributes in the Parameters tool
  • Crosshair locker switched on:  initial status of intensity crosshair locker
  • Diffractogram size: number of points in the diffractogram
  • Correct Solid Angle: correct solid angle flag for diffractogram
  • Send results to LavueController: sends the current tool results to LaVueController tango server


  • Enabled: turns on communication with Sardana
  • Door: Door tango device to communicate with Sardana
  • Add ROIs to MG: causes the ROIs Apply button adds the corresponding ROIs aliases into the current Sardana Measurement Group
  • Fetch ROIs order: read a ROIs order from Sardana environment variables

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