[R] combine similar variables in chart

[Marcella]

I want to make a chart on variables which are taken in 2 different years on 2
the same locations, at different depths, where for every location the
species and the amount of species are determined.

The first chart I want to make is to see how much of every species is
collected in total in a bar or piechart.
Then I want to make a few charts with the species per location and per depth

Here is a subset of my dataset

Station	Latitude(S)	Longitude(E)	Depth(m)	Sa.Code	Sp.Code	N
UPG02	-5.122355036	119.339401	4	UPG02_4	Amphis_lesson	398
UPG02	-5.122355036	119.339401	4	UPG02_4	Amphis_radiat	58
UPG02	-5.122355036	119.339401	4	UPG02_4	Penero_planat	3
UPG02	-5.122355036	119.339401	4.8	UPG02_4.8	Sphero_sp	5
UPG02	-5.122355036	119.339401	4.8	UPG02_4.8	Amphis_lesson	204
UPG02	-5.122355036	119.339401	4.8	UPG02_4.8	Amphis_radiat	18
UPG02	-5.122355036	119.339401	9	UPG02_9	Sphero_sp	1
UPG02	-5.122355036	119.339401	9	UPG02_9	Eponid_repand	2
UPG02	-5.122355036	119.339401	9	UPG02_9	Planor_sp	7
UPG02	-5.122355036	119.339401	15	UPG02_15	Opercu_ammono	1
UPG02	-5.122355036	119.339401	15	UPG02_15	Hetero_depres	94
UPG02	-5.122355036	119.339401	15	UPG02_15	Amphis_lesson	101
UPG02	-5.122355036	119.339401	18	UPG02_18	Sphero_sp	3
UPG02	-5.122355036	119.339401	18	UPG02_18	Millio_sp	1
UPG02	-5.122355036	119.339401	18	UPG02_18	Calcar_mayori	56
UPG03	-5.136863021	119.387289	3	UPG03_3	Millio_sp	2
UPG03	-5.136863021	119.387289	3	UPG03_3	Sahuli_sp1	1
UPG03	-5.136863021	119.387289	3	UPG03_3	Elphid_cratic	20
UPG03	-5.136863021	119.387289	4	UPG03_4	Planor_sp	1
UPG03	-5.136863021	119.387289	4	UPG03_4	Opercu_elegan	1
UPG03	-5.136863021	119.387289	4	UPG03_4	Septot_sp	1
UPG03	-5.136863021	119.387289	5	UPG03_5	Sphero_sp	1
UPG03	-5.136863021	119.387289	5	UPG03_5	Millio_sp	1
UPG03	-5.136863021	119.387289	5	UPG03_5	Ammoni_sp1	1
UPG03	-5.136863021	119.387289	6	UPG03_6	Calcar_sp1	2
UPG03	-5.136863021	119.387289	6	UPG03_6	Calcar_mayori	68
UPG03	-5.136863021	119.387289	6	UPG03_6	Elphid_cratic	17
UPG03	-5.136863021	119.387289	9	UPG03_9	Sphero_sp	2
UPG03	-5.136863021	119.387289	9	UPG03_9	Calcar_mayori	323
UPG03	-5.136863021	119.387289	9	UPG03_9	Calcar_spengl	2
UPG28	-5.122355036	119.339401	5	UPG28_5	Penero_planat	8
UPG28	-5.122355036	119.339401	5	UPG28_5	Amphis_latera	1
UPG28	-5.122355036	119.339401	5	UPG28_5	Sorite_sp	1
UPG28	-5.122355036	119.339401	8	UPG28_8	Bilocu_sp3	1
UPG28	-5.122355036	119.339401	8	UPG28_8	Verteb_sp	1
UPG28	-5.122355036	119.339401	8	UPG28_8	Penero_planat	7
UPG28	-5.122355036	119.339401	11	UPG28_11	Placop_c.f.	1
UPG28	-5.122355036	119.339401	11	UPG28_11	Sphero_sp	2
UPG28	-5.122355036	119.339401	11	UPG28_11	Siphon_siphon	1
UPG28	-5.122355036	119.339401	14	UPG28_14	Sphero_sp	1
UPG28	-5.122355036	119.339401	14	UPG28_14	Sorite_sp	1
UPG28	-5.122355036	119.339401	14	UPG28_14	Spirol_hadaii	1
UPG28	-5.122355036	119.339401	17	UPG28_17	Sphero_sp	3
UPG28	-5.122355036	119.339401	17	UPG28_17	Siphon_siphon	1
UPG28	-5.122355036	119.339401	17	UPG28_17	Sorite_sp	1
UPG32	-5.136863021	119.387289	4	UPG32_4	Pyrgo_striol	1
UPG32	-5.136863021	119.387289	4	UPG32_4	Ammoma_alveol	1
UPG32	-5.136863021	119.387289	4	UPG32_4	Quinqu_netstr	1
UPG32	-5.136863021	119.387289	6	UPG32_6	Neorot_calcar	1
UPG32	-5.136863021	119.387289	6	UPG32_6	Quinqu_c.f.ag	1
UPG32	-5.136863021	119.387289	6	UPG32_6	Amphis_lesson	50
UPG32	-5.136863021	119.387289	8	UPG32_8	Spirol_sp3	1
UPG32	-5.136863021	119.387289	8	UPG32_8	Triloc_tricar	1
UPG32	-5.136863021	119.387289	8	UPG32_8	Amphis_lesson	34




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