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. Author manuscript; available in PMC: 2021 Oct 19.
Published in final edited form as: Nat Protoc. 2021 Feb 22;16(3):1647–1713. doi: 10.1038/s41596-020-00478-x

Table 13 |.

Parameters for loading RNA mosaic in AlignMosaicsGUI

Parameter name Default value Function
chnTableFile Enter Path To RNA Experimental Table: C:\ Enter the path to your experiment layout file here (e.g. E:\2017-11-30_WT_10-12hrs_(HoxRNA)_(BXC3kb)\RNA\rnaTable.xlsx)
analysisFolder .\Analysis\ The default value “.\Analysis\” is recommended. Saved alignment results and mosaics from previous ChrTracerGUI and BuildMosaicsGUI were placed in this folder
backgroundCorrect none Parameter options are ‘none’, ‘file’, and ‘median’. Decide if illumination should be flattened. If you recorded dax files of a blank illumination, select ‘file’. If you have many fields of view with randomly positioned data, you may use ‘median’ to estimate the illumination bias from the data. To skip background correction, keep the default ‘none’
method edgeBlur Keeping the default ‘edgeBlur’ is recommended. This setting uses a linear gradient of overlapping images regions to stitch borders. This is typically best for avoiding artificial edges. Other options include ‘mean’ - average the overlap, ‘sum’ - add the overlap, ‘last’ - use the last image and cover over what was imaged before, ‘first’ - use the first image and ignore later data
mosaicContrastLow 0.1 Contrast to use when rendering images. This fraction of the dimmest pixels will be set to zero/black
mosaicContrastHigh 0.9999 Contrast to use when rendering an image. This fraction of the brightest pixels in the image will be saturated
fovs inf “inf” default value is recommended to use all FOV in the folder. Optionally, select a subset (e.g. “[2:10,15:35]”)
hybs inf Hybridization data that will be displayed in the mosaic. All data from readouts taken throughout the RNA experiment will be shown
dataType inf Show both fiducial and readout data
transpose true The default is ‘true’, which gives you the option to transpose tiles in creating mosaic
scope autoDetect Depending on the camera orientation, individual tiles may be flipped across the left-right and up-down axis to properly render the mosaic. In our case, the camera orientation is auto detected based on the pixel size of the raw images. Outside users will have to configure this setting in the MATLAB code to make sure that the tiles are oriented correctly. Our code within the Github link (https://github.com/BoettigerLab/ORCA-public) is commented in BuildMosaicsGUI.m to make sure the user knows where to make the appropriate changes based on their camera orientation
trimBorder 10 Remove the number of specified pixels around the border - sometimes our cameras have a bright line of pixels at the edge of the image, for reasons currently unclear. This removes them