Merge pull request #90 from observerly/fix/fits/NewFITSImageFrom2DData

fix: Added fits.Data default pointer reference make([]float32, pixels).

coverage.txt

@@ -6,23 +6,25 @@ github.com/observerly/iris/pkg/fits/fits.go:52.2,65.3 2 12
 github.com/observerly/iris/pkg/fits/fits.go:44.31,46.3 1 24
 github.com/observerly/iris/pkg/fits/fits.go:48.17,50.3 1 12
 github.com/observerly/iris/pkg/fits/fits.go:70.96,76.25 3 5
-github.com/observerly/iris/pkg/fits/fits.go:82.2,95.3 2 5
+github.com/observerly/iris/pkg/fits/fits.go:82.2,82.20 1 5
+github.com/observerly/iris/pkg/fits/fits.go:86.2,99.3 2 5
 github.com/observerly/iris/pkg/fits/fits.go:76.25,77.27 1 2974
 github.com/observerly/iris/pkg/fits/fits.go:77.27,79.4 1 3418336
-github.com/observerly/iris/pkg/fits/fits.go:100.55,115.2 2 1
-github.com/observerly/iris/pkg/fits/fits.go:118.60,124.16 3 1
-github.com/observerly/iris/pkg/fits/fits.go:129.2,131.16 2 1
-github.com/observerly/iris/pkg/fits/fits.go:135.2,135.17 1 1
-github.com/observerly/iris/pkg/fits/fits.go:124.16,126.3 1 0
-github.com/observerly/iris/pkg/fits/fits.go:131.16,133.3 1 0
-github.com/observerly/iris/pkg/fits/fits.go:139.90,142.16 2 2
-github.com/observerly/iris/pkg/fits/fits.go:147.2,151.18 3 2
-github.com/observerly/iris/pkg/fits/fits.go:165.2,165.17 1 2
-github.com/observerly/iris/pkg/fits/fits.go:142.16,144.3 1 0
-github.com/observerly/iris/pkg/fits/fits.go:151.18,154.35 2 2
-github.com/observerly/iris/pkg/fits/fits.go:158.3,160.17 2 2
-github.com/observerly/iris/pkg/fits/fits.go:154.35,156.4 1 3968
-github.com/observerly/iris/pkg/fits/fits.go:160.17,162.4 1 0
+github.com/observerly/iris/pkg/fits/fits.go:82.20,84.3 1 0
+github.com/observerly/iris/pkg/fits/fits.go:104.55,119.2 2 1
+github.com/observerly/iris/pkg/fits/fits.go:122.60,128.16 3 1
+github.com/observerly/iris/pkg/fits/fits.go:133.2,135.16 2 1
+github.com/observerly/iris/pkg/fits/fits.go:139.2,139.17 1 1
+github.com/observerly/iris/pkg/fits/fits.go:128.16,130.3 1 0
+github.com/observerly/iris/pkg/fits/fits.go:135.16,137.3 1 0
+github.com/observerly/iris/pkg/fits/fits.go:143.90,146.16 2 2
+github.com/observerly/iris/pkg/fits/fits.go:151.2,155.18 3 2
+github.com/observerly/iris/pkg/fits/fits.go:169.2,169.17 1 2
+github.com/observerly/iris/pkg/fits/fits.go:146.16,148.3 1 0
+github.com/observerly/iris/pkg/fits/fits.go:155.18,158.35 2 2
+github.com/observerly/iris/pkg/fits/fits.go:162.3,164.17 2 2
+github.com/observerly/iris/pkg/fits/fits.go:158.35,160.4 1 3968
+github.com/observerly/iris/pkg/fits/fits.go:164.17,166.4 1 0
 github.com/observerly/iris/pkg/fits/header.go:43.72,92.2 8 27
 github.com/observerly/iris/pkg/fits/header.go:98.78,115.28 8 8
 github.com/observerly/iris/pkg/fits/header.go:119.2,119.30 1 8

pkg/fits/fits.go

@@ -79,6 +79,10 @@ func NewFITSImageFrom2DData(ex [][]uint32, naxis int32, naxis1 int32, naxis2 int
 		}
 	}
 
+	if len(data) == 0 {
+		data = make([]float32, pixels)
+	}
+
 	f := NewFITSImage(naxis, naxis1, naxis2)
 
 	return &FITSImage{