# Q+ROI+Proj Tool

Q+ROI+Proj Tool combines Angle/Q, ROI and Projections

Projections:

- Row/Column slice e.g. 9:10 or 100:120:2, <empty> for all
- Mapping: mean or sum

ROI:

- ROI alias(es) for roi tango devices
- Add to or Fetch from sardana environment
- Sum of the selected ROI or all ROIs. The used version can be selected in the configuration.

Geometry:

- Geometry: detector geometry parameters. They can be pass in both ways via LavueController tango server
- theta angles or q-space selects the radial transformation
- Pixel intensity pointed by mouse and its position

The configuration of the tool can be set with a JSON dictionary passed in the `--tool-configuration` option in command line or a`toolconfig` variable of `LavueController.LavueState` with the following keys:

`aliases` (list of strings), `rois_number` (integer), `mapping` (`sum` or `mean` string), `rows` (string with a python slice), `columns` (string with a python slice), `units` (`angles` or `q-spaces` string), `geometry` (string:float dictionary with the `centerx,` `centery,` `energy, pixelsizex, pixelsizey, detdistance` keywords)

`` e.g.

`lavue -u q+roi+proj -s test --tool-configuration \{\"rois_number\":2,\"aliases\":[\"pilatus_roi1\",\"polatus_roi2\"],\"mapping\":\"sum\",\"rows\":\"10:200:5\"``,\"columns\":\"50:150\",\"units\":\"angles\",\"geometry\":\{\"centerx\":123.4,\"centery\":93.4,\"pixelsizex\":70,\"pixelsizey\":70.2,\"energy\":5050,\"detdistance\":50.5\}\} --start`

``