GMT -J codes

WITH GMT PROJECTION CODES
-J (upper case for width, lower case for scale) Map projection
-JAlon0/lat0[/horizon]/width Lambert azimuthal equal area
-JBlon0/lat0/lat1/lat2width Albers conic equal area
-JClon0/lat0width Cassini cylindrical
-JCyl_stere/[lon0[/lat0/]]width Cylindrical stereographic
-JDlon0/lat0/lat1/lat2width Equidistant conic
-JElon0/lat0[/horizon]/width Azimuthal equidistant
-JFlon0/lat0[/horizon]/width Azimuthal gnomonic
-JGlon0/lat0[/horizon]/width Azimuthal orthographic
-JGlon0/lat0alt/azim/tilt/twist/W/H/width General perspective
-JHlon0width Hammer equal area
-JIlon0width Sinusoidal equal area
-JJlon0width Miller cylindrical
-JKflon0width Eckert IV equal area
-JKslon0width Eckert VI equal area
-JLlon0/lat0/lat1/lat2width Lambert conic conformal
-JM[lon0[/lat0/]]width Mercator cylindrical
-JN[lon0/]width Robinson
-JOalon0/lat0azim/width Oblique Mercator, 1: origin and azimuth
-JOblon0/lat0/lon1/lat1width Oblique Mercator, 2: two points
-JOclon0/lat0/lonp/latpwidth Oblique Mercator, 3: origin and pole
-JP[a]width[/origin] Polar [azimuthal] (\theta, r) (or cylindrical)
-JPoly[lon0[/lat0/]]width (American) polyconic
-JQ[lon0[/lat0/]]width Equidistant cylindrical
-JR[lon0/]width Winkel Tripel
-JSlon0/lat0[/horizon]/width General stereographic
-JT[lon0[/lat0/]]width Transverse Mercator
-JUzone/width Universal Transverse Mercator (UTM)
-JV[lon0/]width Van der Grinten
-JW[lon0/]width Mollweide
-JXwidth[l|pexp|T|t][/height[l|pexp|T|t]][d] Linear, log_{10}, x^a-y^b, and time
-JYlon0/lat0width Cylindrical equal area