Spectra Object Not Found

[tcouls]

I'm very new to R with no coding experience, but I'm using it for undergraduate research to conduct PCA. I keep receiving this error:
Error in .chkArgs(mode = 11L) :
Argument 'spectra' was not found or not a Spectra object
I plotted my spectra object to make sure I hadn't created it wrong, but it returns this error every time. Am I doing something wrong in my coding? Any help would be appreciated.

[williaml]

Can you provide a reproducible example? Code, not screenshots.

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[tcouls]

Sorry this took a while, finals took over for a bit. I tried but with the spectra data we're using, I wasn't sure what counted as minimal and I hope I did this right.
data.frame(
stringsAsFactors = FALSE,
check.names = FALSE,
floral source = c("AC", "BB", "CL", "M"),
Sample Number NMR Spec Number = c(1, 1, 3, 1),
9.96035 = c(-0.01, 0.01, -0.01, 0.01),
9.8802299999999992 = c(0, 0, -0.02, 0.01),
9.8001100000000001 = c(0.02, 0.01, -0.04, 0),
9.7199899999999992 = c(0.02, 0.03, 0.02, 0.02),
9.6398700000000002 = c(0.02, 0.01, -0.01, 0),
9.5597499999999993 = c(-0.01, 0.02, -0.01, 0.01),
9.4796300000000002 = c(0.01, 0, 0.02, 0.01),
9.3995099999999994 = c(0.01, 0.01, -0.02, 0),
9.3193900000000003 = c(0.02, -0.01, -0.02, 0),
9.2392699999999994 = c(-0.02, 0, -0.04, 0),
9.1591500000000003 = c(0, 0.01, 0, 0.01),
9.0790299999999995 = c(-0.01, 0.01, 0.02, 0),
8.9989100000000004 = c(0, 0, 0, 0),
8.9187899999999996 = c(0.02, 0, 0.02, 0),
8.8386700000000005 = c(0.01, 0, -0.02, 0.01),
8.7585499999999996 = c(0.01, 0, -0.01, -0.01),
8.6784300000000005 = c(0.01, -0.01, -0.03, 0),
8.5983099999999997 = c(0.02, -0.01, -0.02, 0),
8.5182000000000002 = c(0.01, 0, -0.02, 0),
8.4380799999999994 = c(-0.01, -0.01, 0, 0.01),
8.3579600000000003 = c(0, 0, 0.02, 0),
8.2778399999999994 = c(0, -0.01, -0.03, 0),
8.1977200000000003 = c(0.01, 0, -0.02, 0),
8.1175999999999995 = c(-0.02, 0, -0.02, 0),
8.0374800000000004 = c(-0.02, -0.01, -0.01, -0.02),
7.9573600000000004 = c(-0.03, 0, 0.04, 0.04),
7.8772399999999996 = c(0.02, -0.05, 0.01, 0),
7.7971199999999996 = c(-0.02, -0.02, 0.03, 0),
7.7169999999999996 = c(0, 0, 0.05, 0),
7.6368799999999997 = c(0.01, 0.07, 0, 0.05),
7.5567599999999997 = c(0.08, 0.03, 0.06, -0.03),
7.4766399999999997 = c(0.02, 0.08, -0.01, 0.03),
7.3965199999999998 = c(0, 0, 0.02, -0.05),
7.0760399999999999 = c(0, 0.02, 0, 0.23),
6.9959199999999999 = c(0.01, 0, -0.01, 0.04),
6.9157999999999999 = c(0.06, 0.01, 0.08, 0.02),
6.83568 = c(0, 0.07, 0, 0.09),
6.75556 = c(0, 0.01, 0.01, 0.07),
6.67544 = c(-0.01, 0, 0, -0.01),
6.5953200000000001 = c(-0.01, 0, -0.01, -0.01),
6.5152000000000001 = c(0, 0.02, -0.01, 0),
6.4350800000000001 = c(0.01, 0.03, -0.01, 0.02),
6.3549600000000002 = c(0, 0, -0.01, 0),
6.2748400000000002 = c(0.01, 0, 0.02, 0.01),
6.1947200000000002 = c(-0.01, 0, -0.01, 0),
6.1146000000000003 = c(0, -0.01, 0.01, -0.01),
6.0344800000000003 = c(0.01, 0.01, 0.02, 0.01),
5.9543699999999999 = c(0, 0, 0.01, 0.03),
5.87425 = c(-0.01, -0.01, -0.02, 0.06),
5.79413 = c(-0.01, 0, -0.01, 0.04),
5.71401 = c(0.02, 0, 0.01, -0.01),
5.6338900000000001 = c(0.01, 0, -0.01, -0.01),
5.5537700000000001 = c(0, 0, -0.02, -0.01),
5.4736500000000001 = c(-0.01, 0, -0.02, 0.01),
5.3935300000000002 = c(0, -0.01, -0.03, 0),
5.3134100000000002 = c(0.03, 0.23, 0.07, 0.14),
5.2332900000000002 = c(0.02, 0.17, 0.04, 0.15),
5.1531700000000003 = c(0.03, 0, 0.04, -0.01),
5.0730500000000003 = c(-0.02, 0.03, 0, 0.01),
4.9929300000000003 = c(-0.01, -0.01, 0, -0.01),
4.9128100000000003 = c(0, -0.01, -0.02, 0.01),
4.8326900000000004 = c(0.01, 0.02, -0.01, 0.01),
4.7525700000000004 = c(0, -0.03, 0.03, -0.01),
4.6724500000000004 = c(0.02, 0.02, 0, 0.05),
4.5923299999999996 = c(0.01, 0.03, 0.01, 0.08),
4.5122099999999996 = c(0, 0.02, 0.01, 0.02),
4.4320899999999996 = c(0.04, 0.01, -0.01, 0.07),
4.3519699999999997 = c(0.04, 0, -0.04, 0.06),
4.2718499999999997 = c(0.01, 0.06, -0.01, 0.12),
4.1917299999999997 = c(-0.02, 0.05, -0.01, 0.16),
4.1116099999999998 = c(-0.04, 0.11, -0.09, 0.19),
4.0314899999999998 = c(0.12, 0.1, 0.35, 0.15),
3.9513699999999998 = c(-0.02, 0.29, 0.09, 0.27),
3.8712499999999999 = c(-0.05, 0.05, 0.03, 1.17),
3.7911299999999999 = c(-0.02, -0.02, 0.01, 0.41),
3.7110099999999999 = c(0.11, 0.07, 0.01, 0.38),
3.63089 = c(-0.02, 0, -0.02, 0.19),
3.55077 = c(0.04, 0, 0, 0.15),
3.47065 = c(0.04, 0.05, 0.04, 0.13),
3.3905400000000001 = c(0.01, 0.05, 0, 0.11),
3.3104200000000001 = c(0, 0.04, 0, 0.06),
3.2303000000000002 = c(0.02, 0.01, -0.02, 0.02),
3.1501800000000002 = c(0.02, 0, 0.02, 0.05),
3.0700599999999998 = c(0.01, 0, 0.01, 0.06),
2.9899399999999998 = c(0, 0.01, -0.01, 0),
2.9098199999999999 = c(-0.01, 0.01, 0.01, 0.01),
2.8296999999999999 = c(0, 0.01, 0.01, -0.04),
2.7495799999999999 = c(0, 0.09, 0, 0),
2.6694599999999999 = c(-0.01, 0.03, 0, 0.02),
2.58934 = c(-0.01, 0.01, 0.02, 0.02),
2.50922 = c(0, 0.08, 0.01, 0.03),
2.4291 = c(0.03, 0.04, 0.1, 0.03),
2.3489800000000001 = c(0.37, 0.24, 0.63, 0.2),
2.2688600000000001 = c(0.42, 0.72, 0.57, 0.54),
2.1887400000000001 = c(28.77, 0.58, 0.63, 0.42),
2.1086200000000002 = c(2.81, 0.12, 0.18, 0),
2.0285000000000002 = c(0.14, 0.19, 0.09, 0.09),
1.94838 = c(0.35, 0.75, 0.22, 0.52),
1.86826 = c(0.44, 0.33, 0.5, 0.2),
1.7881400000000001 = c(0.67, 0.51, 0.63, 0.37),
1.7080200000000001 = c(1.38, 1.25, 1.17, 1.51),
1.6278999999999999 = c(19.97, 10.4, 16.67, 6.2),
1.5477799999999999 = c(28.73, 11.45, 17.16, 6.41),
1.46766 = c(1.57, 2.36, 1.69, 2.29),
1.38754 = c(0.83, 1.32, 1.66, 0.86),
1.30742 = c(2.42, 2.45, 6.44, 0.65),
1.2273000000000001 = c(8.01, 19.15, 32.11, 12.55),
1.1471800000000001 = c(0.55, 29.23, 4.45, 36.22),
1.0670599999999999 = c(0.33, 3.08, 2.65, 5.74),
0.98694000000000004 = c(0.13, 1.91, 1.05, 3.61),
0.90683000000000002 = c(0.48, 1.12, 2.76, 1.71),
0.82670999999999994 = c(0.99, 6.03, 5.61, 6.34),
0.74658999999999998 = c(0.03, 3.34, 1.68, 5.17),
0.66647000000000001 = c(0, 1.38, 0.81, 2.67),
0.58635000000000004 = c(0.02, 0.24, 0.07, 0.85)
reprex::reprex({library(spectrolab) example <- as_spectra(All_Honey_Data_2, name_idx = 1, meta_idxs = 2) library(chemospec) c_pcaSpectra(example, choice = "autoscale", cent = TRUE)})