[FIX] fix spelling

.codespellrc

@@ -0,0 +1,4 @@
+[codespell]
+skip = .git,env,*build,lib
+builtin = clear,rare
+ignore-words-list = morg, fo

.github/codespell.yml

@@ -0,0 +1,19 @@
+name: codespell
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # Check for common misspellings
+  codespell:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: codespell-project/actions-codespell@master

README.md

@@ -36,7 +36,7 @@ initCppRoi
 ```
 
 If you are using CPP_SPM, you got nothing to do as CPP_ROI is already installed
-as a submodule, and intitialized when running `initCppSpm`.
+as a submodule, and initialized when running `initCppSpm`.
 
 ### Dependencies
 
@@ -63,7 +63,7 @@ as a submodule, and intitialized when running `initCppSpm`.
 -   Can help generate ROI based on:
     -   the SPM Anatomy toolbox (INSERT URL)
     -   the SPM neuromorphometric atlas
-    -   neurosynth probabilty maps
+    -   neurosynth probability maps
     -   the probabilistic maps of visual topography in human cortex [@wang2014]
         -   https://scholar.princeton.edu/napl/resources
     -   the probabilistic functional atlas of human occipito-temporal visual cortex [@rosenke2020]

demos/roi/get_peak_coordinates.m

@@ -10,7 +10,7 @@
 % If there is no value above a certain threshold the function will return NaN
 threshold = 1;
 
-% The image and the ROI must have the same dimension if we want to use the thresold option
+% The image and the ROI must have the same dimension if we want to use the threshold option
 reslicedImages = resliceRoiImages(dataImage, roiImage);
 
 % Get to work.

demos/roi/label_and_extract_clusters.m

@@ -1,7 +1,7 @@
 % (C) Copyright 2021 CPP ROI developers
 
 %
-% scritps to transform a probability map from neurosynth
+% scripts to transform a probability map from neurosynth
 % into an image with fewer clusters (apply peak and extend threshold) and
 % where each cluster has one label.
 %
@@ -20,8 +20,8 @@
 
 labeledClusters = labelClusters(zMap, peakThreshold, extendThreshold);
 
-%% Use the ouput of the previous step
-% to vizualize the image and figure out what is the label we want to extract.
+%% Use the output of the previous step
+% to visualize the image and figure out what is the label we want to extract.
 labelStruct = struct('ROI', 'ns left MT', ...
                      'label', 1);
 

src/roi/getPeakCoordinates.m

@@ -59,7 +59,7 @@
 
   data(~mask) = nan(1, sum(~mask(:)));
 
-  % Get the location of the higest t-value in slice space
+  % Get the location of the highest t-value in slice space
   voxeIdx = find(data == maxVal);
   if numel(voxeIdx) > 1
     % TODO return list of all maximums?