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On September 9, 2019 1:21:04 AM PDT, rhotuser at yahoo.co.jp
wrote:>Dear Sir,
>
>After installing prospectr,?
>> data(NIRsoil)> mode(NIRsoil)[1] "list">?
>I am a beginner and the structure of ?NIRsoil? is complicated.
>
>Judging from the explanation of NIRsoil (see below),?there are six
>elements: NT, Ciso, CEC, train, validation, spc.
>
>Please tell me how to know the structure of such ?NIRsoil?.
>When using mode (NIRsoil) , The answer is just a ?list?.
>Is there a command or function "Detailstructure (NIRsoil)"?
>> NIRsoil
>.
>.? ? ?spc.2494? spc.2496? spc.24981? ?0.3724227 0.3724588 0.37256772?
>?0.3159643 0.3164802 0.31681803? ?0.3416802 0.3422180 0.34263164?
>?0.3650448 0.3654987 0.36580555? ?0.3050233 0.3058226 0.30640076?
>?0.3599009 0.3603650 0.36070207? ?0.3365467 0.3369826 0.33725788?
>?0.3922267 0.3926329 0.39288209? ?0.3149452 0.3153307 0.315540410?
>0.4951153 0.4954152 0.495766411? 0.3414548 0.3418657 0.342114012?
>0.3314737 0.3319690 0.332336513? 0.4153854 0.4156993 0.416079614?
>0.3311567 0.3316245 0.331926815? 0.3289777 0.3294281 0.329720616?
>0.4268982 0.4274236 0.427819517? 0.3421552 0.3426531 0.342981518?
>0.3452011 0.3457459 0.346121719? 0.3497368 0.3497175 0.349840320?
>0.3896840 0.3901652 0.390537521? 0.4062244 0.4066894 0.407021322?
>0.3792031 0.3796499 0.379960123? 0.3252305 0.3256037 0.325836624?
>0.3427994 0.3431511 0.343363125? 0.3410443 0.3414203 0.341648926?
>0.3947710 0.3952165 0.395562027? 0.2930943 0.2934901 0.293697728?
>0.4138924 0.4144398 0.414861929? 0.2906964 0.2910948 0.291324130?
>0.4000607 0.4004497 0.400749131? 0.3275807 0.3278961 0.328067632?
>0.3343273 0.3347059 0.334947033? 0.2923162 0.2927208 0.292952534?
>0.3181143 0.3184221 0.318574835? 0.3959161 0.3963806 0.396695436?
>0.3412020 0.3415608 0.341737737? 0.3109980 0.3119904 0.312796538?
>0.3452408 0.3457109 0.346040139? 0.2352630 0.2357922 0.236104440?
>0.3731434 0.3735985 0.373948341? 0.3776968 0.3780733 0.378314142?
>0.4279117 0.4278319 0.427811343? 0.3499106 0.3502492 0.350448044?
>0.4060152 0.4064416 0.406781645? 0.4434104 0.4437352 0.444117646?
>0.3106347 0.3111292 0.311479047? 0.3048005 0.3052686 0.305555748?
>0.3074032 0.3078929 0.308188549? 0.3099467 0.3103620 0.310607950?
>0.4140719 0.4140101 0.414070551? 0.3047789 0.3051992 0.305453152?
>0.4372076 0.4371921 0.437301153? 0.3784582 0.3788292 0.379046054?
>0.3070685 0.3074959 0.307739255? 0.3929690 0.3930495 0.393248956?
>0.3104950 0.3109303 0.311175657? 0.3110389 0.3114884 0.311783658?
>0.3561086 0.3565895 0.356935659? 0.2946499 0.2950254 0.295230760?
>0.3396696 0.3402275 0.340604561? 0.4174463 0.4174852 0.417609462?
>0.3838490 0.3845536 0.385175463? 0.4214520 0.4217800 0.422008564?
>0.3136719 0.3141062 0.314410265? 0.3137282 0.3141668 0.314444466?
>0.4341556 0.4341235 0.434172067? 0.3028214 0.3032053 0.303438768?
>0.2929183 0.2933525 0.293613269? 0.2901444 0.2905667 0.290814470?
>0.2926482 0.2930853 0.293328871? 0.3964101 0.3968658 0.397207272?
>0.3205706 0.3209653 0.321186973? 0.2965653 0.2970253 0.297328574?
>0.3271259 0.3274269 0.327623075? 0.2910520 0.2914549 0.291697476?
>0.3266725 0.3271569 0.327475777? 0.3405427 0.3410150 0.341319778?
>0.3164929 0.3169560 0.317269479? 0.3489597 0.3495394 0.349918280?
>0.3369682 0.3374025 0.337660681? 0.2608885 0.2613245 0.261581182?
>0.3132109 0.3136024 0.313788183? 0.3155325 0.3159175 0.316144884?
>0.3156847 0.3160608 0.316250785? 0.2751068 0.2754884 0.275712986?
>0.2722970 0.2726988 0.272900087? 0.3421156 0.3424138 0.342577688?
>0.4408897 0.4413919 0.441767389? 0.4094418 0.4098032 0.410052590?
>0.2883307 0.2887366 0.288972191? 0.3368085 0.3373375 0.337674492?
>0.2914632 0.2918586 0.292056993? 0.3701615 0.3703609 0.370657894?
>0.3168159 0.3172900 0.317585795? 0.3141627 0.3145356 0.314785296?
>0.2717998 0.2721882 0.272409297? 0.2994829 0.2998522 0.300074998?
>0.4238313 0.4238643 0.423967099? 0.3173946 0.3178398 0.3181364100
>0.3065352 0.3070051 0.3073053101 0.4119025 0.4122178 0.4126194102
>0.2997539 0.3001756 0.3004323103 0.3195902 0.3200457 0.3203547104
>0.3770273 0.3775299 0.3779288105 0.3119653 0.3123196 0.3125118106
>0.3007703 0.3012067 0.3014555107 0.3583141 0.3586335 0.3588411108
>0.3613160 0.3616626 0.3619002109 0.3012548 0.3016973 0.3019971110
>0.3040114 0.3044745 0.3047490111 0.3886676 0.3889934 0.3894869112
>0.3381325 0.3386472 0.3389995113 0.3228837 0.3232841 0.3235284114
>0.3175641 0.3179575 0.3182012115 0.3255604 0.3259808 0.3262322116
>0.3038366 0.3043306 0.3046326117 0.3040762 0.3045244 0.3048216118
>0.3101427 0.3105674 0.3108223119 0.3186323 0.3190890 0.3194055120
>0.3183660 0.3188377 0.3191515121 0.3716398 0.3723766 0.3729757122
>0.3336347 0.3341000 0.3344247123 0.3013631 0.3017261 0.3018954124
>0.3559751 0.3563222 0.3565449125 0.3467284 0.3475789 0.3482055126
>0.2983477 0.2992734 0.3000016127 0.2966113 0.2970161 0.2972673128
>0.3244559 0.3249162 0.3252265129 0.3687044 0.3692860 0.3697534130
>0.2949226 0.2953484 0.2956104131 0.3449411 0.3454331 0.3457713132
>0.3458079 0.3462659 0.3465872133 0.3879239 0.3882694 0.3884915134
>0.3998409 0.3997933 0.3999189135 0.2591648 0.2596039 0.2598299136
>0.3145797 0.3149986 0.3152637137 0.3184437 0.3188738 0.3191448138
>0.3101936 0.3105727 0.3108114139 0.3263323 0.3267737 0.3270491140
>0.3234212 0.3238232 0.3240880141 0.5669109 0.5681474 0.5693322142
>0.4268930 0.4277861 0.4285390?[ reached getOption("max.print") --
683?
>Finally, another question: Why 142 lines ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
>? ? 825 observed data and 5 variables, the reference said.
>
>Reference-----------
>| NIRsoil {prospectr} | R Documentation |
>
>
>NIRSoil
>
>Description
>Soil spectral library of the ?Chimiometrie 2006?challenge. The database
>contains absorbance spectra ofdried and sieved soil samples measured
>between 1100 nm and2498 nm at 2 nm interval. The soil samples come
>fromagricultural fields collected from all over the Walloonregion in
>Belgium. Three parameters are associated with thespectral library: Nt
>(Total Nitrogen in g/Kg of dry soil),CEC (Cation Exchange Capacity in
>meq/100 g of dry soil) andCiso (Carbon in g/100 g of dry soil). Carbon
>content hasbeen measured following the ISO14235 method.
>Usage
>data(NIRsoil)
>
>Format
>A data frame of 825 observations and 5 variables
>Details
>The dataset includes 618 training and 207 test samples with5 variables:
>Nt (Total Nitrogen), Ciso (Carbon), CEC(Cation Exchange Capacity),
>train (vector of 0,1indicating training (1) and validation (0) samples)
>and spc(a matrix with absorbance NIR data and bandpositions as
>colnames). Nt, Ciso and CEC haverespectively 22 %, 11 % and 46 % of the
>observationswith missing values.
>Source
>Pierre Dardenne from Walloon Agricultural Research Centre,Belgium.
>References
>Fernandez Pierna, J.A., and Dardenne, P., 2008. Soilparameter
>quantification by NIRS as a Chemometric challengeat 'Chimiometrie
>2006'. Chemometrics and IntelligentLaboratory Systems 91,
>94-98.Minasny, B., and McBratney, A.B., 2008. Regression rules asa tool
>for predicting soil properties from infraredreflectance spectroscopy.
>Chemometrics and IntelligentLaboratory Systems 94, 72-79.
>?Package prospectr version 0.1.3 Index
>
>
>
> [[alternative HTML version deleted]]
>
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--
Sent from my phone. Please excuse my brevity.