我想使用 R 将 txt 文件中的值放入 XML 文档中。保存这些值的 txt 文件如下所示：
"Value" "Label" "v"
AB Albeluvisol 166,71,43,255
ABal Alic Albeluvisol 173,114,101,255
ABap Abruptic Albeluvisol 236,76,203,255
ABar Arenic Albeluvisol 30,177,58,255
ABau Alumic Albeluvisol 157,9,124,255
ABeun Endoeutric Albeluvisol 69,16,63,255
ABfg Fragic Albeluvisol 208,39,109,255
ABfr Ferric Albeluvisol 196,209,39,255
ABge Gelic Albeluvisol 93,27,59,255
ABgl Gleyic Albeluvisol 232,125,4,255
ABha Haplic Albeluvisol 0,34,146,255
ABhi Histic Albeluvisol 98,99,192,255
ABsl Siltic Albeluvisol 6,68,227,255
ABst Stagnic Albeluvisol 140,236,81,255
ABum Umbric Albeluvisol 25,98,131,255
XML结构是这样的：
<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
<qgis version="1.8.0-Lisboa" minimumScale="0" maximumScale="1e+08" hasScaleBasedVisibilityFlag="0">
<transparencyLevelInt>255</transparencyLevelInt>
<renderer-v2 attr="MIN_TOP" symbollevels="0" type="categorizedSymbol">
<categories>
<category symbol="0" value="AB" label="Albeluvisol"/>
<category symbol="1" value="ABal" label="Alic Albeluvisol"/>
...
</categories>
<symbols>
<symbol outputUnit="MM" alpha="1" type="fill" name="0">
<layer pass="0" class="SimpleFill" locked="0">
<prop k="color" v="115,216,189,255"/>
</layer>
</symbol>
<symbol outputUnit="MM" alpha="1" type="fill" name="1">
<layer pass="0" class="SimpleFill" locked="0">
<prop k="color" v="115,154,211,255"/>
</layer>
</symbol>
...
</symbols>
</renderer-v2>
</qgis>
..对于文本文件中的每一行，应创建具有适当值、标签和颜色 ('v') 的类别和符号，符号名称为 0 到 n。
我想为此使用 R-Package XML - 这可行吗？
编辑
这就是我尝试过的，但很快就卡住了：
The txt-file..
Value Label v
AB Albeluvisol 76,123,181,255
ABal Alic Albeluvisol 166,229,79,255
ABap Abruptic Albeluvisol 203,101,0,255
ABar Arenic Albeluvisol 52,126,43,255
ABau Alumic Albeluvisol 69,202,22,255
ABeun Endoeutric Albeluvisol 141,159,172,255
ABfg Fragic Albeluvisol 160,19,146,255
ABfr Ferric Albeluvisol 21,228,207,255
ABge Gelic Albeluvisol 131,52,191,255
ABgl Gleyic Albeluvisol 46,192,91,255
ABha Haplic Albeluvisol 86,171,183,255
ABhi Histic Albeluvisol 204,147,127,255
ABsl Siltic Albeluvisol 93,3,234,255
ABst Stagnic Albeluvisol 175,219,207,255
ABum Umbric Albeluvisol 97,118,95,255
AC Acrisol 37,223,37,255
ACab Albic Acrisol 66,93,142,255
ACan Andic Acrisol 87,125,156,255
ACap Abruptic Acrisol 58,11,251,255
ACar Arenic Acrisol 254,179,2,255
ACau Alumic Acrisol 228,147,46,255
ACcr Chromic Acrisol 109,48,156,255
ACdyh Hyperdystric Acrisol 203,86,138,255
ACfr Ferric Acrisol 16,219,128,255
ACgl Gleyic Acrisol 69,60,134,255
ACgr Geric Acrisol 73,224,129,255
ACha Haplic Acrisol 54,116,89,255
AChu Humic Acrisol 241,76,173,255
ACle Leptic Acrisol 39,147,130,255
ACll Lamellic Acrisol 79,243,242,255
ACohh Hyperochric Acrisol 98,53,169,255
ACpf Profondic Acrisol 164,206,189,255
ACpl Plinthic Acrisol 102,165,217,255
ACro Rhodic Acrisol 18,105,158,255
ACsk Skeletic Acrisol 212,190,222,255
ACst Stagnic Acrisol 230,45,189,255
ACum Umbric Acrisol 159,204,66,255
ACvi Vitric Acrisol 105,101,90,255
ACvt Vetic Acrisol 35,216,122,255
AL Alisol 64,30,191,255
ALab Albic Alisol 27,197,145,255
ALan Andic Alisol 167,104,99,255
ALap Abruptic Alisol 232,54,26,255
ALar Arenic Alisol 193,17,246,255
ALcr Chromic Alisol 236,16,244,255
ALdyh Hyperdystric Alisol 101,172,147,255
ALfr Ferric Alisol 157,248,133,255
ALgl Gleyic Alisol 20,163,20,255
ALha Haplic Alisol 76,0,12,255
ALhu Humic Alisol 152,5,5,255
ALll Lamellic Alisol 131,3,75,255
ALni Nitic Alisol 255,214,234,255
ALpf Profondic Alisol 212,196,222,255
ALpl Plinthic Alisol 212,82,85,255
ALro Rhodic Alisol 84,101,67,255
ALsk Skeletic Alisol 93,144,151,255
ALst Stagnic Alisol 113,223,47,255
ALum Umbric Alisol 18,211,68,255
ALvr Vertic Alisol 182,246,252,255
AN Andosol 151,158,16,255
ANao Acroxic Andosol 214,160,242,255
ANar Arenic Andosol 161,253,63,255
ANca Calcaric Andosol 255,21,136,255
ANdu Duric Andosol 193,51,181,255
ANdy Dystric Andosol 194,125,147,255
ANes Eutrisilic Andosol 195,245,16,255
ANeu Eutric Andosol 228,146,232,255
ANfu Fulvic Andosol 229,160,139,255
ANgl Gleyic Andosol 158,214,159,255
ANha Haplic Andosol 200,157,120,255
ANhi Histic Andosol 115,176,106,255
ANhy Hydric Andosol 161,147,198,255
ANle Leptic Andosol 77,250,147,255
ANlv Luvic Andosol 169,29,249,255
ANme Melanic Andosol 245,133,133,255
ANmo Mollic Andosol 106,63,219,255
ANph Pachic Andosol 250,43,114,255
ANpi Placic Andosol 92,15,64,255
ANsi Silic Andosol 93,2,140,255
ANsk Skeletic Andosol 14,20,208,255
ANso Sodic Andosol 115,74,84,255
ANth Thaptic Andosol 204,59,247,255
ANum Umbric Andosol 56,214,155,255
ANvi Vitric Andosol 68,65,21,255
ANvt Vetic Andosol 42,8,155,255
AR Arenosol 26,85,235,255
ARab Albic Arenosol 79,43,202,255
ARad Aridic Arenosol 122,43,168,255
ARca Calcaric Arenosol 205,237,73,255
ARduw Hypoduric Arenosol 212,219,40,255
ARdy Dystric Arenosol 207,216,152,255
AReu Eutric Arenosol 64,122,207,255
ARfg Fragic Arenosol 208,104,187,255
ARfl Ferralic Arenosol 21,55,31,255
ARge Gelic Arenosol 176,75,99,255
ARgl Gleyic Arenosol 66,92,252,255
ARgp Gypsiric Arenosol 145,147,80,255
ARha Haplic Arenosol 72,80,88,255
ARll Lamellic Arenosol 130,86,209,255
ARlvw Hypoluvic Arenosol 218,146,132,255
ARpl Plinthic Arenosol 94,18,68,255
ARpr Protic Arenosol 202,75,198,255
ARru Rubic Arenosol 244,30,13,255
ARszw Hyposalic Arenosol 48,107,60,255
ARtf Tephric Arenosol 50,118,100,255
ARye Yermic Arenosol 70,97,89,255
AT Anthrosol 119,149,97,255
ATar Arenic Anthrosol 30,139,145,255
ATfl Ferralic Anthrosol 227,65,73,255
ATgl Gleyic Anthrosol 157,207,249,255
AThg Hydragric Anthrosol 69,5,192,255
ATht Hortic Anthrosol 195,227,4,255
ATir Irragric Anthrosol 224,201,255,255
ATlv Luvic Anthrosol 161,203,179,255
ATpa Plaggic Anthrosol 198,173,202,255
ATrg Regic Anthrosol 50,184,153,255
ATsd Spodic Anthrosol 25,166,13,255
ATst Stagnic Anthrosol 233,123,208,255
ATtr Terric Anthrosol 11,110,112,255
CH Chernozem 208,202,159,255
CHcc Calcic Chernozem 65,43,96,255
CHch Chernic Chernozem 232,148,121,255
CHgl Gleyic Chernozem 64,10,237,255
CHgs Glossic Chernozem 76,43,122,255
CHha Haplic Chernozem 213,219,10,255
CHlv Luvic Chernozem 146,167,123,255
CHsl Siltic Chernozem 88,35,207,255
CHvm Vermic Chernozem 198,239,124,255
CHvr Vertic Chernozem 201,147,235,255
CL Calcisol 242,128,106,255
CLad Aridic Calcisol 80,4,246,255
CLcch Hypercalcic Calcisol 212,161,162,255
CLccw Hypocalcic Calcisol 220,208,102,255
CLgl Gleyic Calcisol 114,181,121,255
CLha Haplic Calcisol 73,193,220,255
CLle Leptic Calcisol 45,163,58,255
CLlv Luvic Calcisol 169,39,235,255
CLohh Hyperochric Calcisol 134,58,236,255
CLpt Petric Calcisol 4,208,71,255
CLsk Skeletic Calcisol 116,185,186,255
CLso Sodic Calcisol 123,202,17,255
CLszn Endosalic Calcisol 251,155,149,255
CLty Takyric Calcisol 20,23,177,255
CLvr Vertic Calcisol 208,122,73,255
CLye Yermic Calcisol 125,192,190,255
CM Cambisol 112,232,215,255
CMad Aridic Cambisol 229,151,59,255
CMan Andic Cambisol 30,246,208,255
CMca Calcaric Cambisol 223,171,62,255
CMcr Chromic Cambisol 118,105,203,255
CMdy Dystric Cambisol 118,2,11,255
CMeu Eutric Cambisol 185,45,197,255
CMfl Ferralic Cambisol 130,30,106,255
CMfv Fluvic Cambisol 242,143,79,255
CMge Gelic Cambisol 57,186,188,255
CMgl Gleyic Cambisol 71,16,71,255
CMgp Gypsiric Cambisol 218,169,80,255
CMgt Gelistagnic Cambisol 3,184,97,255
CMha Haplic Cambisol 184,65,159,255
CMle Leptic Cambisol 191,68,25,255
CMmo Mollic Cambisol 101,217,57,255
CMohh Hyperochric Cambisol 72,23,62,255
CMpl Plinthic Cambisol 118,154,204,255
CMro Rhodic Cambisol 127,128,252,255
CMsk Skeletic Cambisol 106,90,89,255
CMso Sodic Cambisol 166,142,119,255
CMst Stagnic Cambisol 199,13,67,255
CMszn Endosalic Cambisol 185,11,119,255
CMty Takyric Cambisol 100,129,2,255
CMvi Vitric Cambisol 114,196,6,255
CMvr Vertic Cambisol 14,244,243,255
CMye Yermic Cambisol 86,220,211,255
CR Cryosol 192,38,151,255
CRad Aridic Cryosol 154,30,42,255
CRan Andic Cryosol 197,198,203,255
CRcc Calcic Cryosol 126,101,90,255
CRgc Glacic Cryosol 146,52,8,255
CRgl Gleyic Cryosol 135,185,52,255
CRgy Gypsic Cryosol 176,157,25,255
CRha Haplic Cryosol 62,17,230,255
CRhi Histic Cryosol 129,12,15,255
CRle Leptic Cryosol 182,10,48,255
CRli Lithic Cryosol 200,81,142,255
CRmo Mollic Cryosol 147,18,58,255
CRna Natric Cryosol 240,238,130,255
CRoa Oxyaquic Cryosol 152,52,161,255
CRst Stagnic Cryosol 182,89,30,255
CRsz Salic Cryosol 104,215,8,255
CRti Thionic Cryosol 211,234,204,255
CRtu Turbic Cryosol 206,170,116,255
CRum Umbric Cryosol 237,70,165,255
CRye Yermic Cryosol 25,240,184,255
DU Durisol 210,232,69,255
DUad Aridic Durisol 2,62,249,255
DUar Arenic Durisol 41,54,2,255
DUcc Calcic Durisol 252,164,90,255
DUcr Chromic Durisol 50,71,19,255
DUgy Gypsic Durisol 112,194,144,255
DUha Haplic Durisol 226,79,8,255
DUle Leptic Durisol 88,168,134,255
DUlv Luvic Durisol 35,65,181,255
DUohh Hyperochric Durisol 100,253,38,255
DUpt Petric Durisol 22,79,108,255
DUty Takyric Durisol 28,79,239,255
DUvr Vertic Durisol 198,28,163,255
DUye Yermic Durisol 66,47,52,255
FL Fluvisol 198,124,170,255
FLad Aridic Fluvisol 21,252,189,255
FLar Arenic Fluvisol 29,191,188,255
FLca Calcaric Fluvisol 105,211,135,255
FLdy Dystric Fluvisol 33,30,231,255
FLeu Eutric Fluvisol 17,40,247,255
FLge Gelic Fluvisol 189,184,102,255
FLgl Gleyic Fluvisol 195,201,96,255
FLgp Gypsiric Fluvisol 240,248,131,255
FLha Haplic Fluvisol 10,36,174,255
FLhi Histic Fluvisol 230,82,240,255
FLhu Humic Fluvisol 55,34,14,255
FLmo Mollic Fluvisol 115,201,133,255
FLsk Skeletic Fluvisol 30,17,171,255
FLso Sodic Fluvisol 85,129,223,255
FLst Stagnic Fluvisol 111,107,242,255
FLsz Salic Fluvisol 202,95,14,255
FLtf Tephric Fluvisol 61,242,159,255
FLti Thionic Fluvisol 131,22,140,255
FLty Takyric Fluvisol 78,166,119,255
FLum Umbric Fluvisol 222,18,144,255
FLye Yermic Fluvisol 38,115,250,255
FR Ferralsol 142,76,47,255
FRac Acric Ferralsol 188,224,54,255
FRan Andic Ferralsol 116,88,74,255
FRar Arenic Ferralsol 95,177,72,255
FRau Alumic Ferralsol 235,201,54,255
FRdyh Hyperdystric Ferralsol 109,216,243,255
FReuh Hypereutric Ferralsol 50,210,79,255
FRfr Ferric Ferralsol 235,59,156,255
FRgi Gibbsic Ferralsol 147,154,195,255
FRgl Gleyic Ferralsol 148,39,244,255
FRgr Geric Ferralsol 248,136,98,255
FRha Haplic Ferralsol 106,58,96,255
FRhi Histic Ferralsol 154,79,133,255
FRhu Humic Ferralsol 42,103,202,255
FRlx Lixic Ferralsol 17,112,62,255
FRmo Mollic Ferralsol 46,229,0,255
FRpl Plinthic Ferralsol 150,104,192,255
FRpo Posic Ferralsol 131,78,171,255
FRro Rhodic Ferralsol 206,207,101,255
FRstn Endostagnic Ferralsol 193,137,31,255
FRum Umbric Ferralsol 230,49,229,255
FRvt Vetic Ferralsol 130,160,13,255
FRxa Xanthic Ferralsol 35,125,138,255
GL Gleysol 127,218,62,255
GLan Andic Gleysol 190,61,143,255
GLap Abruptic Gleysol 128,235,75,255
GLaq Anthraquic Gleysol 15,133,162,255
GLar Arenic Gleysol 168,189,132,255
GLau Alumic Gleysol 90,235,164,255
GLax Alcalic Gleysol 13,167,150,255
GLca Calcaric Gleysol 236,71,32,255
GLcc Calcic Gleysol 246,238,4,255
GLdy Dystric Gleysol 221,178,61,255
GLeu Eutric Gleysol 69,111,195,255
GLge Gelic Gleysol 183,25,103,255
GLgy Gypsic Gleysol 185,183,151,255
GLha Haplic Gleysol 168,243,164,255
GLhi Histic Gleysol 70,171,201,255
GLhu Humic Gleysol 13,8,68,255
GLmo Mollic Gleysol 49,151,106,255
GLpl Plinthic Gleysol 108,128,22,255
GLso Sodic Gleysol 189,139,43,255
GLszn Endosalic Gleysol 187,98,122,255
GLtf Tephric Gleysol 197,9,103,255
GLti Thionic Gleysol 167,92,156,255
GLtx Toxic Gleysol 254,14,58,255
GLty Takyric Gleysol 59,90,251,255
GLum Umbric Gleysol 209,11,238,255
GLvi Vitric Gleysol 204,107,70,255
GY Gypsisol 152,212,112,255
GYad Aridic Gypsisol 168,60,62,255
GYaz Arzic Gypsisol 90,198,153,255
GYcc Calcic Gypsisol 25,12,129,255
GYdu Duric Gypsisol 222,139,245,255
GYgyh Hypergypsic Gypsisol 254,255,7,255
GYgyw Hypogypsic Gypsisol 85,241,120,255
GYha Haplic Gypsisol 54,206,224,255
GYle Leptic Gypsisol 232,174,54,255
GYlv Luvic Gypsisol 6,234,204,255
GYohh Hyperochric Gypsisol 88,151,189,255
GYpt Petric Gypsisol 63,198,53,255
GYsk Skeletic Gypsisol 201,226,6,255
GYso Sodic Gypsisol 71,145,27,255
GYszn Endosalic Gypsisol 244,4,192,255
GYty Takyric Gypsisol 244,140,37,255
GYvr Vertic Gypsisol 243,54,76,255
GYye Yermic Gypsisol 135,239,26,255
HS Histosol 119,191,213,255
HSax Alcalic Histosol 67,172,152,255
HScy Cryic Histosol 133,160,16,255
HSdy Dystric Histosol 81,188,246,255
HSeu Eutric Histosol 122,254,156,255
HSfi Fibric Histosol 209,133,237,255
HSfo Folic Histosol 83,168,152,255
HSgc Glacic Histosol 197,26,29,255
HSge Gelic Histosol 20,24,167,255
HSom Ombric Histosol 252,190,95,255
HSrh Rheic Histosol 16,0,179,255
HSsa Sapric Histosol 186,6,20,255
HSsz Salic Histosol 67,90,49,255
HSti Thionic Histosol 218,160,22,255
HStx Toxic Histosol 234,29,227,255
KS Kastanozem 213,33,238,255
KSam Anthric Kastanozem 235,26,229,255
KScc Calcic Kastanozem 139,65,46,255
KScr Chromic Kastanozem 14,12,102,255
KSgy Gypsic Kastanozem 50,123,155,255
KSha Haplic Kastanozem 9,197,253,255
KSlv Luvic Kastanozem 152,64,129,255
KSsl Siltic Kastanozem 215,227,93,255
KSsow Hyposodic Kastanozem 212,69,73,255
KSvr Vertic Kastanozem 91,41,73,255
LP Leptosol 178,8,165,255
LPad Aridic Leptosol 13,216,25,255
LPca Calcaric Leptosol 86,27,147,255
LPdy Dystric Leptosol 49,107,247,255
LPeu Eutric Leptosol 216,80,30,255
LPge Gelic Leptosol 200,146,30,255
LPgl Gleyic Leptosol 147,8,34,255
LPgp Gypsiric Leptosol 38,148,228,255
LPha Haplic Leptosol 122,190,124,255
LPhk Hyperskeletic Leptosol 85,87,152,255
LPhu Humic Leptosol 231,249,182,255
LPli Lithic Leptosol 190,64,91,255
LPmo Mollic Leptosol 215,42,244,255
LPrz Rendzic Leptosol 125,184,158,255
LPum Umbric Leptosol 193,60,195,255
LPvr Vertic Leptosol 106,14,68,255
LPye Yermic Leptosol 205,20,156,255
LV Luvisol 250,255,201,255
LVab Albic Luvisol 207,214,157,255
LVan Andic Luvisol 252,157,0,255
LVar Arenic Luvisol 77,244,136,255
LVcc Calcic Luvisol 125,127,129,255
LVcr Chromic Luvisol 221,43,130,255
LVct Cutanic Luvisol 183,127,78,255
LVdy Dystric Luvisol 30,208,6,255
LVfr Ferric Luvisol 109,191,29,255
LVgl Gleyic Luvisol 233,234,220,255
LVha Haplic Luvisol 59,235,167,255
LVle Leptic Luvisol 61,26,236,255
LVll Lamellic Luvisol 60,224,60,255
LVohh Hyperochric Luvisol 109,84,254,255
LVpf Profondic Luvisol 159,172,54,255
LVro Rhodic Luvisol 6,22,141,255
LVsow Hyposodic Luvisol 220,91,21,255
LVst Stagnic Luvisol 151,128,197,255
LVvi Vitric Luvisol 72,149,146,255
LVvr Vertic Luvisol 41,174,218,255
LX Lixisol 67,103,228,255
LXab Albic Lixisol 242,7,137,255
LXan Andic Lixisol 38,115,5,255
LXap Abruptic Lixisol 203,97,148,255
LXar Arenic Lixisol 60,188,156,255
LXcc Calcic Lixisol 58,33,96,255
LXcr Chromic Lixisol 141,181,157,255
LXfr Ferric Lixisol 60,253,26,255
LXgl Gleyic Lixisol 194,85,49,255
LXgr Geric Lixisol 28,86,212,255
LXha Haplic Lixisol 76,40,46,255
LXhu Humic Lixisol 94,57,115,255
LXle Leptic Lixisol 111,128,91,255
LXll Lamellic Lixisol 200,194,74,255
LXohh Hyperochric Lixisol 117,235,76,255
LXpf Profondic Lixisol 38,12,182,255
LXpl Plinthic Lixisol 49,116,219,255
LXro Rhodic Lixisol 145,189,232,255
LXst Stagnic Lixisol 145,216,71,255
LXvi Vitric Lixisol 22,103,77,255
LXvt Vetic Lixisol 119,43,28,255
NT Nitisol 197,13,235,255
NTal Alic Nitisol 167,138,189,255
NTan Andic Nitisol 99,127,240,255
NTau Alumic Nitisol 173,134,157,255
NTdy Dystric Nitisol 10,78,148,255
NTeu Eutric Nitisol 187,180,156,255
NTfl Ferralic Nitisol 69,24,240,255
NTha Haplic Nitisol 75,53,140,255
NThu Humic Nitisol 231,97,2,255
NTmo Mollic Nitisol 55,139,127,255
NTro Rhodic Nitisol 51,48,157,255
NTum Umbric Nitisol 140,216,1,255
NTvt Vetic Nitisol 120,156,20,255
PH Phaeozem 239,57,36,255
PHab Albic Phaeozem 183,35,207,255
PHan Andic Phaeozem 146,61,124,255
PHap Abruptic Phaeozem 130,35,0,255
PHca Calcaric Phaeozem 245,227,68,255
PHcr Chromic Phaeozem 107,204,59,255
PHgl Gleyic Phaeozem 147,98,87,255
PHgs Glossic Phaeozem 151,5,83,255
PHgz Greyic Phaeozem 107,137,235,255
PHha Haplic Phaeozem 148,9,175,255
PHle Leptic Phaeozem 135,189,182,255
PHlv Luvic Phaeozem 170,117,168,255
PHph Pachic Phaeozem 226,181,220,255
PHsk Skeletic Phaeozem 154,32,251,255
PHsl Siltic Phaeozem 159,121,224,255
PHso Sodic Phaeozem 0,19,219,255
PHst Stagnic Phaeozem 91,90,71,255
PHtf Tephric Phaeozem 109,141,139,255
PHvi Vitric Phaeozem 194,154,144,255
PHvm Vermic Phaeozem 138,22,21,255
PHvr Vertic Phaeozem 106,79,87,255
PL Planosol 248,196,204,255
PLab Albic Planosol 94,244,210,255
PLal Alic Planosol 150,58,110,255
PLar Arenic Planosol 242,163,43,255
PLau Alumic Planosol 126,155,66,255
PLax Alcalic Planosol 107,171,139,255
PLca Calcaric Planosol 1,191,172,255
PLcc Calcic Planosol 122,169,24,255
PLcr Chromic Planosol 79,167,27,255
PLdy Dystric Planosol 168,6,18,255
PLeu Eutric Planosol 85,123,0,255
PLfr Ferric Planosol 6,77,146,255
PLge Gelic Planosol 73,11,142,255
PLgl Gleyic Planosol 239,251,13,255
PLgr Geric Planosol 78,253,185,255
PLgy Gypsic Planosol 163,138,162,255
PLha Haplic Planosol 160,153,85,255
PLhi Histic Planosol 58,23,184,255
PLlv Luvic Planosol 251,108,42,255
PLmo Mollic Planosol 8,33,170,255
PLpf? Petroferric Planosol 141,230,198,255
PLpl Plinthic Planosol 119,253,212,255
PLro Rhodic Planosol 84,86,65,255
PLso Sodic Planosol 52,246,157,255
PLszn Endosalic Planosol 16,49,92,255
PLti Thionic Planosol 93,59,177,255
PLum Umbric Planosol 157,33,39,255
PLvr Vertic Planosol 148,63,204,255
PT Plinthosol 167,201,92,255
PTab Albic Plinthosol 203,36,244,255
PTac Acric Plinthosol 123,153,203,255
PTal Alic Plinthosol 131,42,189,255
PTap Abruptic Plinthosol 68,51,2,255
PTau Alumic Plinthosol 102,192,204,255
PTdun Endoduric Plinthosol 168,87,50,255
PTeun Endoeutric Plinthosol 105,74,174,255
PTfr Ferric Plinthosol 165,87,125,255
PTgr Geric Plinthosol 191,114,241,255
PTgs Glossic Plinthosol 105,136,157,255
PTha Haplic Plinthosol 61,91,96,255
PThu Humic Plinthosol 214,231,254,255
PTph Pachic Plinthosol 227,213,175,255
PTpt Petric Plinthosol 244,13,110,255
PTst Stagnic Plinthosol 144,56,223,255
PTum Umbric Plinthosol 50,132,113,255
PTvt Vetic Plinthosol 227,178,29,255
PZ Podzol 232,94,33,255
PZam Anthric Podzol 69,56,147,255
PZcb Carbic Podzol 0,225,133,255
PZdn Densic Podzol 51,118,169,255
PZet Entic Podzol 228,15,53,255
PZfg Fragic Podzol 213,23,97,255
PZge Gelic Podzol 103,38,107,255
PZgl Gleyic Podzol 162,9,63,255
PZha Haplic Podzol 26,252,172,255
PZhi Histic Podzol 77,40,90,255
PZll Lamellic Podzol 28,119,215,255
PZpi Placic Podzol 252,60,104,255
PZrs Rustic Podzol 218,44,81,255
PZsk Skeletic Podzol 74,46,189,255
PZst Stagnic Podzol 155,220,24,255
PZum Umbric Podzol 32,53,131,255
RG Regosol 85,151,171,255
RGad Aridic Regosol 75,2,140,255
RGah Anthropic Regosol 154,230,254,255
RGai Aric Regosol 141,60,195,255
RGanb Thaptoandic Regosol 26,163,13,255
RGar Arenic Regosol 136,191,201,255
RGca Calcaric Regosol 134,170,122,255
RGdy Dystric Regosol 233,128,189,255
RGeu Eutric Regosol 123,154,60,255
RGga Garbic Regosol 24,184,156,255
RGge Gelic Regosol 20,9,21,255
RGgl Gleyic Regosol 243,61,100,255
RGgp Gypsiric Regosol 197,215,13,255
RGgt Gelistagnic Regosol 133,116,47,255
RGha Haplic Regosol 184,77,228,255
RGhu Humic Regosol 157,38,155,255
RGle Leptic Regosol 77,42,104,255
RGohh Hyperochric Regosol 134,226,27,255
RGrd Reductic Regosol 27,202,65,255
RGsk Skeletic Regosol 239,20,191,255
RGsow Hyposodic Regosol 15,114,183,255
RGsp Spolic Regosol 49,128,36,255
RGst Stagnic Regosol 71,228,33,255
RGszw Hyposalic Regosol 26,242,34,255
RGtf Tephric Regosol 237,139,228,255
RGty Takyric Regosol 147,217,139,255
RGub Urbic Regosol 94,78,126,255
RGvib Thaptovitric Regosol 194,73,164,255
RGvm Vermic Regosol 83,174,250,255
RGye Yermic Regosol 196,211,24,255
SC Solonchak 84,224,175,255
SCad Aridic Solonchak 67,181,232,255
SCae Aceric Solonchak 224,46,137,255
SCcc Calcic Solonchak 156,215,99,255
SCcl Chloridic Solonchak 217,76,38,255
SCcn Carbonatic Solonchak 160,81,144,255
SCdu Duric Solonchak 74,53,187,255
SCge Gelic Solonchak 251,194,221,255
SCgl Gleyic Solonchak 24,16,82,255
SCgy Gypsic Solonchak 95,108,248,255
SCha Haplic Solonchak 13,5,224,255
SChi Histic Solonchak 35,110,46,255
SCmo Mollic Solonchak 222,251,62,255
SCoh Ochric Solonchak 127,168,202,255
SCps Petrosalic Solonchak 29,80,178,255
SCso Sodic Solonchak 62,217,219,255
SCst Stagnic Solonchak 71,158,178,255
SCsu Sulphatic Solonchak 251,213,88,255
SCszh Hypersalic Solonchak 65,239,42,255
SCty Takyric Solonchak 165,59,26,255
SCvr Vertic Solonchak 41,184,229,255
SCye Yermic Solonchak 254,167,1,255
SN Solonetz 210,156,16,255
SNab Albic Solonetz 102,167,94,255
SNad Aridic Solonetz 112,116,164,255
SNcc Calcic Solonetz 65,254,102,255
SNdu Duric Solonetz 18,75,23,255
SNgl Gleyic Solonetz 78,205,133,255
SNgy Gypsic Solonetz 193,118,222,255
SNha Haplic Solonetz 1,54,176,255
SNhu Humic Solonetz 209,61,76,255
SNmg Magnesic Solonetz 116,39,222,255
SNmo Mollic Solonetz 231,123,231,255
SNst Stagnic Solonetz 72,253,80,255
SNsz Salic Solonetz 113,116,76,255
SNty Takyric Solonetz 252,159,203,255
SNvr Vertic Solonetz 198,204,138,255
SNye Yermic Solonetz 205,158,19,255
UM Umbrisol 147,204,64,255
UMab Albic Umbrisol 45,198,125,255
UMam Anthric Umbrisol 168,113,74,255
UMar Arenic Umbrisol 65,33,42,255
UMfl Ferralic Umbrisol 213,26,158,255
UMge Gelic Umbrisol 162,102,137,255
UMgl Gleyic Umbrisol 172,43,102,255
UMha Haplic Umbrisol 79,33,21,255
UMhu Humic Umbrisol 129,98,43,255
UMle Leptic Umbrisol 146,117,15,255
UMsk Skeletic Umbrisol 124,117,57,255
UMst Stagnic Umbrisol 248,173,83,255
VR Vertisol 134,115,133,255
VRal Alic Vertisol 7,40,39,255
VRcc Calcic Vertisol 207,105,83,255
VRcr Chromic Vertisol 69,212,113,255
VRdu Duric Vertisol 30,0,232,255
VReu Eutric Vertisol 58,235,66,255
VRgm Grumic Vertisol 229,76,31,255
VRgp Gypsiric Vertisol 200,91,169,255
VRgy Gypsic Vertisol 217,194,239,255
VRha Haplic Vertisol 14,200,44,255
VRms Mesotrophic Vertisol 43,45,135,255
VRmz Mazic Vertisol 161,47,28,255
VRna Natric Vertisol 46,14,227,255
VRpe Pellic Vertisol 185,191,56,255
VRsow Hyposodic Vertisol 73,189,178,255
VRsz Salic Vertisol 47,180,175,255
VRti Thionic Vertisol 125,212,179,255
1 1 11 1 Town 202,221,9,255
2 2 22 2 Soil disturbed by man 178,167,152,255
3 3 33 3 Water body 17,103,22,255
4 4 44 4 Marsh 103,31,242,255
5 5 55 5 Glacier 201,209,111,255
6 6 66 6 Rock outcrops 177,136,131,255
No information 0,0,0,255
## R:
library(XML)
leg <- read.delim("D:/GIS_DataBase/Environmental_Data/soil/vector/WRB_FULL.txt",
header = T, sep = "\t")
n <- nrow(leg)
name <- 0:(n-1)
value <- as.character(leg$Value)
v <- as.character(leg$v)
label <- as.character(leg$Label)
node_ctgs <- newXMLNode("categories")
node_symb <- newXMLNode("symbols")
node_lyr <- newXMLNode("layer")
node_prop <- newXMLNode("prop")
for (i in name) addChildren(node_ctgs, newXMLNode("category", attrs = c(symbol=name[i], value=value[i], label = label[i])))
我会这样进行，将节点一个接一个地放置..这合适吗？但是，我对如何制作循环以实现符号节点的嵌套结构一无所知。