249 | | |
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| 249 | |
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| 250 | |
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| 251 | <simplesect> |
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| 252 | <title> |
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| 253 | <emphasis role="newtext">Lambert Cylindrical Equal Area</emphasis> |
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| 254 | </title> |
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| 255 | <programlisting> |
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| 256 | <emphasis role="newtext"><varname>grid_mapping_name</varname> = lambert_cylindrical_equal_area</emphasis> |
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| 257 | </programlisting> |
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| 258 | <variablelist> |
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| 259 | <varlistentry> |
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| 260 | <term><emphasis><emphasis role="newtext">Map parameters:</emphasis></emphasis></term> |
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| 261 | <listitem><para><emphasis role="newtext"> |
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| 262 | <itemizedlist> |
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| 263 | <listitem> |
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| 264 | <emphasis role="newtext"><varname>longitude_of_central_meridian</varname></emphasis> |
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| 265 | </listitem> |
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| 266 | <listitem> |
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| 267 | <emphasis role="newtext">Either <varname>standard_parallel</varname> or <varname>scale_factor_at_projection_origin</varname></emphasis> |
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| 268 | </listitem> |
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| 269 | <listitem> |
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| 270 | <emphasis role="newtext"><varname>false_easting</varname></emphasis> |
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| 271 | </listitem> |
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| 272 | <listitem> |
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| 273 | <emphasis role="newtext"><varname>flase_northing</varname></emphasis> |
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| 274 | </listitem> |
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| 275 | </itemizedlist> |
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| 276 | </emphasis></para></listitem> |
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| 277 | </varlistentry> |
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| 278 | <varlistentry> |
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| 279 | <term><emphasis><emphasis role="newtext">Map coordinates:</emphasis></emphasis></term> |
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| 280 | <listitem><para><emphasis role="newtext"> |
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| 281 | <emphasis role="newtext">The x (abscissa) and y (ordinate) rectangular coordinates are identified by the <varname>standard_name</varname> attribute value <varname>projection_x_coordinate</varname> and <varname>projection_y_coordinate</varname> respectively.</emphasis> |
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| 282 | </emphasis></para></listitem> |
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| 283 | </varlistentry> |
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| 284 | <varlistentry> |
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| 285 | <term><emphasis><emphasis role="newtext">Notes:</emphasis></emphasis></term> |
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| 286 | <listitem><para><emphasis role="newtext"> |
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| 287 | Notes on using the PROJ.4 software packages for computing the mapping may be found at <ulink url="http://www.remotesensing.org/geotiff/proj_list/cylindrical_equal_area.html">http://www.remotesensing.org/geotiff/proj_list/cylindrical_equal_area.html</ulink> ("Lambert Cylindrical Equal Area" or EPSG 9834 or EPSG 9835). Detailed formulas can be found in [Snyder] pages 76-85. |
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| 288 | </emphasis></para></listitem> |
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| 289 | </varlistentry> |
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| 290 | </variablelist> |
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| 291 | </simplesect> |
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| 292 | |
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| 293 | |
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| 324 | <simplesect> |
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| 325 | <title> |
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| 326 | <emphasis role="newtext">Mercator</emphasis> |
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| 327 | </title> |
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| 328 | <programlisting> |
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| 329 | <emphasis role="newtext"><varname>grid_mapping_name</varname> = mercator</emphasis> |
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| 330 | </programlisting> |
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| 331 | <variablelist> |
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| 332 | <varlistentry> |
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| 333 | <term><emphasis><emphasis role="newtext">Map parameters:</emphasis></emphasis></term> |
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| 334 | <listitem><para><emphasis role="newtext"> |
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| 335 | <itemizedlist> |
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| 336 | <listitem> |
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| 337 | <emphasis role="newtext"><varname>longitude_of_projection_origin</varname></emphasis> |
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| 338 | </listitem> |
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| 339 | <listitem> |
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| 340 | <emphasis role="newtext"><varname>latitude_of_projection_origin</varname></emphasis> |
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| 341 | </listitem> |
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| 342 | <listitem> |
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| 343 | <emphasis role="newtext">Either <varname>standard_parallel</varname> (EPSG 9805) or <varname>scale_factor_at_projection_origin</varname> (EPSG 9804)</emphasis> |
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| 344 | </listitem> |
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| 345 | </itemizedlist> |
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| 346 | </emphasis></para></listitem> |
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| 347 | </varlistentry> |
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| 348 | <varlistentry> |
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| 349 | <term><emphasis><emphasis role="newtext">Map coordinates:</emphasis></emphasis></term> |
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| 350 | <listitem><para><emphasis role="newtext"> |
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| 351 | The x (abscissa) and y (ordinate) rectangular coordinates are identified by the <varname>standard_name</varname> attribute value <varname>projection_x_coordinate</varname> and <varname>projection_y_coordinate</varname> respectively. |
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| 352 | </emphasis></para></listitem> |
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| 353 | </varlistentry> |
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| 354 | <varlistentry> |
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| 355 | <term><emphasis><emphasis role="newtext">Notes:</emphasis></emphasis></term> |
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| 356 | <listitem><para><emphasis role="newtext"> |
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| 357 | Notes on using the PROJ.4 software packages for computing the mapping may be found at <ulink url="http://www.remotesensing.org/geotiff/proj_list/mercator_1sp.html">http://www.remotesensing.org/geotiff/proj_list/mercator_1sp.html</ulink> ("Mercator (1SP)" or EPSG 9804) or <ulink url="http://www.remotesensing.org/geotiff/proj_list/mercator_2sp.html">http://www.remotesensing.org/geotiff/proj_list/mercator_2sp.html</ulink> ("Mercator (2SP)" or EPSG 9805). |
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| 358 | </emphasis></para> |
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| 359 | <para><emphasis role="newtext"> |
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| 360 | More information on formulas available in <biblioref linkend="ogp-epsg_gn7_2">[OGP/EPSG_GN7_2]</biblioref>. |
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| 361 | </emphasis></para></listitem> |
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| 362 | </varlistentry> |
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| 363 | </variablelist> |
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| 364 | </simplesect> |
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| 365 | |
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| 366 | |
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| 367 | <simplesect> |
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| 368 | <title><emphasis role="newtext">Orthographic</emphasis></title> |
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| 369 | <programlisting> |
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| 370 | <emphasis role="newtext"><varname>grid_mapping_name</varname> = orthographic</emphasis> |
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| 371 | </programlisting> |
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| 372 | <variablelist> |
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| 373 | <varlistentry> |
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| 374 | <term><emphasis><emphasis role="newtext">Map parameters:</emphasis></emphasis></term> |
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| 375 | <listitem><para><emphasis role="newtext"> |
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| 376 | <itemizedlist> |
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| 377 | <listitem> |
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| 378 | <emphasis role="newtext"><varname>longitude_of_projection_origin</varname></emphasis> |
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| 379 | </listitem> |
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| 380 | <listitem> |
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| 381 | <emphasis role="newtext"><varname>latitude_of_projection_origin</varname></emphasis> |
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| 382 | </listitem> |
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| 383 | <listitem> |
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| 384 | <emphasis role="newtext"><varname>false_easting</varname></emphasis> |
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| 385 | </listitem> |
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| 386 | <listitem> |
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| 387 | <emphasis role="newtext"><varname>false_northing</varname></emphasis> |
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| 388 | </listitem> |
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| 389 | </itemizedlist> |
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| 390 | </emphasis></para></listitem> |
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| 391 | </varlistentry> |
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| 392 | <varlistentry> |
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| 393 | <term><emphasis><emphasis role="newtext">Map coordinates:</emphasis></emphasis></term> |
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| 394 | <listitem><para><emphasis role="newtext"> |
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| 395 | The x (abscissa) and y (ordinate) rectangular coordinates are identified by the <varname>standard_name</varname> attribute value <varname>projection_x_coordinate</varname> and <varname>projection_y_coordinate</varname> respectively. |
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| 396 | </emphasis></para></listitem> |
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| 397 | </varlistentry> |
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| 398 | <varlistentry> |
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| 399 | <term><emphasis><emphasis role="newtext">Notes:</emphasis></emphasis></term> |
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| 400 | <listitem><para><emphasis role="newtext"> |
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| 401 | Notes on using the PROJ.4 software packages for computing the mapping may be found at <ulink url="http://www.remotesensing.org/geotiff/proj_list/orthographic.html">http://www.remotesensing.org/geotiff/proj_list/orthographic.html</ulink> ("Orthographic" or EPSG 9840). |
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| 402 | </emphasis></para> |
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| 403 | <para><emphasis role="newtext"> |
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| 404 | More information on formulas available in <biblioref linkend="ogp-epsg_gn7_2">[OGP/EPSG_GN7_2]</biblioref>. |
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| 405 | </emphasis></para></listitem> |
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| 406 | </varlistentry> |
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| 407 | </variablelist> |
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| 408 | </simplesect> |
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| 409 | |
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| 410 | |
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