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maxrjones
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  1. .. index:: ! grdimage
    2. 

  2. .. include:: module_core_purpose.rst_
    3. 

  3. 

  4. ********
    5. 

  5. grdimage
    6. 

  6. ********
    7. 

  7. 

  8. |grdimage_purpose|
    9. 

  9. 

  10. Synopsis
    11. 

  11. --------
    12. 

  12. 

  13. .. include:: common_SYN_OPTs.rst_
    14. 

  14. 

  15. **gmt grdimage** *grd_z* \| *img* \| *grd_r grd_g grd_b*
    16. 

  16. [ |-A|\ *out_img*\ [**=**\ *driver*] ]
    17. 

  17. [ |SYN_OPT-B| ]
    18. 

  18. [ |-C|\ *cpt* ]
    19. 

  19. [ |-D|\ [**r**] ]
    20. 

  20. [ |-E|\ [**i**\|\ *dpi*] ] |-J|\ *parameters*
    21. 

  21. [ |-G|\ *color*\ [**+b**\|\ **f**] ]
    22. 

  22. [ |-I|\ [*intensfile*\|\ *intensity*\|\ *modifiers*] ]
    23. 

  23. [ |-M| ] [ |-N| ]
    24. 

  24. [ |-Q| ]
    25. 

  25. [ |SYN_OPT-Rz| ]
    26. 

  26. [ |SYN_OPT-U| ]
    27. 

  27. [ |SYN_OPT-V| ]
    28. 

  28. [ |SYN_OPT-X| ]
    29. 

  29. [ |SYN_OPT-Y| ]
    30. 

  30. [ |SYN_OPT-f| ]
    31. 

  31. [ |SYN_OPT-n| ]
    32. 

  32. [ |SYN_OPT-p| ]
    33. 

  33. [ |SYN_OPT-t| ]
    34. 

  34. [ |SYN_OPT-x| ]
    35. 

  35. [ |SYN_OPT--| ]
    36. 

  36. 

  37. .. include:: grdimage_common.rst_
    38. 

  38. 

  39. .. include:: grdimage_notes.rst_
    40. 

  40. 

  41. Examples
    42. 

  42. --------
    43. 

  43. 

  44. .. include:: explain_example.rst_
    45. 

  45. 

  46. .. include:: oneliner_info.rst_
    47. 

  47. 

  48. For a quick-and-dirty illuminated color map of the data in the remote file
    49. 

  49. @AK_gulf_grav.nc, try::
    50. 

  50. 

  51.     gmt grdimage @AK_gulf_grav.nc -I+d -B -pdf quick
    52. 

  52. 

  53. To gray-shade the file AK_gulf_grav.nc on a Lambert map at 1.5 cm/degree
    54. 

  54. along the standard parallels 18 and 24, centered on (142W, 55N), try::
    55. 

  55. 

  56.     gmt begin alaska_gray
    57. 

  57.       gmt grd2cpt -Cgray @AK_gulf_grav.nc
    58. 

  58.       grdimage @AK_gulf_grav.nc -Jl142W/55N/18/24/1.5c -B
    59. 

  59.     gmt end show
    60. 

  60. 

  61. To create an illuminated color plot of the gridded data set
    62. 

  62. image.nc, using the intensities provided by the file intens.nc, and
    63. 

  63. color levels in the file colors.cpt, with linear scaling at 10
    64. 

  64. inch/x-unit, tickmarks every 5 units::
    65. 

  65. 

  66.     gmt grdimage image.nc -Jx10i -Ccolors.cpt -Iintens.nc -B5 -pdf image
    67. 

  67. 

  68. To create an false color plot from the three grid files
    69. 

  69. red.nc, green.nc, and blue.nc, with linear scaling at 10 inch/x-unit,
    70. 

  70. tickmarks every 5 units::
    71. 

  71. 

  72.     gmt grdimage red.nc green.nc blue.nc -Jx10i -B5 -pdf rgbimage
    73. 

  73. 

  74. When GDAL support is built in: To create a sinusoidal projection of a
    75. 

  75. remotely located Jessica Rabbit::
    76. 

  76. 

  77.     gmt grdimage -JI15c -Rd http://larryfire.files.wordpress.com/2009/07/untooned_jessicarabbit.jpg -pdf jess
    78. 

  78. 

  79. .. include:: cpt_notes.rst_
    80. 

  80. 

  81. See Also
    82. 

  82. --------
    83. 

  83. 

  84. :doc:`gmt`,
    85. 

  85. :doc:`gmt.conf`,
    86. 

  86. :doc:`grd2kml`,
    87. 

  87. :doc:`grdcontour`,
    88. 

  88. :doc:`grdview`,
    89. 

  89. :doc:`grdgradient`,
    90. 

  90. :doc:`grdhisteq`
    91.
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