added error warning when trying to load a non-radiometric image file …

…with readflirjpg. See issues [#7](#7),  [#10](#10),  [#13](#13).

.gitignore

@@ -18,3 +18,5 @@ README_old.Rmd
 SampleFLIRCSQ.csq
 /output
 .git*
+tempfile
+.gitignore

R/readflirJPG.R

@@ -51,10 +51,16 @@ readflirJPG<-function(imagefile,  exiftoolpath="installed", headerindex=1)
 
   cams <- flirsettings(imagefile, exiftoolpath, camvals = "")
 
+  if(is.null(cams$Info$RawThermalImageType)){
+    warning("Exiftool cannot extract raw thermal image data.\n  Image does not contain FLIR radiometric data.\n  Check with the user manual or manufacturer\n  or ensure camera is set to save radiometric information.")
+  }
+
   currentpath <- getwd()
   to.read <- file("tempfile", "rb")
   alldata <- readBin(to.read, raw(), n = file.info("tempfile")$size)
   close(to.read)
+
+
   if (cams$Info$RawThermalImageType == "TIFF") {
     TIFF <- Thermimage::locate.fid(c("54", "49", "46", "46","49", "49"), alldata, zeroindex = FALSE)
 

README.Rmd

@@ -23,8 +23,8 @@ The version here on github is the current, development version.  Archived source
 
 # Current release notes 
 
-2019-12-20: Version 4.1.0 is on Github (development version)
-  - added the option to split thermal video files based on different filetype/header types.  See issue [#9](https://github.com/gtatters/Thermimage/issues/9). 
+2020-08-20: Version 4.1.1 is on Github (development version)
+  - added error warning when trying to load a non-radiometric image file with readflirjpg. See issues [#7](https://github.com/gtatters/Thermimage/issues/7),  [#10](https://github.com/gtatters/Thermimage/issues/10),  [#13](https://github.com/gtatters/Thermimage/issues/13). 
 
 
 
@@ -853,6 +853,9 @@ EEVBlog:
 
 # Previous release notes
 
+- 2019-12-20: Version 4.1.0
+  - added the option to split thermal video files based on different filetype/header types.  See issue [#9](https://github.com/gtatters/Thermimage/issues/9). 
+
 
 - 2019-11-26: Version 4.0.1
   - fixed problems with system2 piping calls to ffmpeg on windows machines. See issue [#8](https://github.com/gtatters/Thermimage/issues/8).  Added common perl script to package to facilitate splitting fff, tiff, jpegls filetypes. Minor changes to __convertflirVID()__ and __ffmpegcall()__ functions.