Issue68 calibration (#66)

Fixes #63 => Implemented tryCatch to calibration routine

Author: Matthew-Ahmadi

NEWS.md

@@ -6,6 +6,7 @@
 * Documentation: minor revision of documentation for functions check_classifier and getBout #41
 * Reading data: minor revision of ReadAndCalibrate when reading ActiGraph devices with the Idle Sleep Mode activated #58
 * Feature extraction: numeric features are no longer rounded to 3 decimal places #61
+* Calibration: trycatch function applied to calibration routine for cases in which coefficients cannot be retrieved #63
 
 # actimetric 0.1.3
 

R/ReadAndCalibrate.R

@@ -88,10 +88,13 @@ ReadAndCalibrate = function(file, sf, blocksize, blocknumber, inspectfileobject,
     calCoefs = vm.error.st = vm.error.end = NULL
     if (do.calibration == TRUE & iteration == 1) {
       accCols = which(colnames(data) %in% c("x","y","z"))
-      cal = calibrateRaw(data[, accCols], sf = sf, verbose = verbose)
+      cal = try(calibrateRaw(data[, accCols], sf = sf, verbose = verbose),silent = T)
+
       if (is.list(cal)) {
         calCoefs = cal$calCoefs; vm.error.st = cal$vm.error.st;
         vm.error.end = cal$vm.error.end
+      } else{
+        calCoefs = list(offset = c(0,0,0), scale = c(1, 1, 1))
       }
     }
     # -------------------------------------------------------------------------