% DNAGMagneticsProfile.m L Braile 4/12/06 % DNAG Magnetics ftp://ftp.ngdc.noaa.gov/Solid_Earth/Aeromag/gna/ascii_xyz/ % http://www.ngdc.noaa.gov/seg/fliers/se-2004.shtml % Profile on latitude = 35.666309 % Begins at ~ -125 deg W lon to ~ -105 deg W lon % Basin and Range is about -120 to -110 % 480 points, dx = 3.7641 km % See interpolation at end of data (below) % W Lon N Lat nT A = [-124.999481 35.666309 -158 -124.957817 35.666309 -163 -124.916145 35.666309 -85 -124.874481 35.666309 -74 -124.832809 35.666309 -54 -124.791145 35.666309 -40 -124.749481 35.666309 -36 -124.707809 35.666309 -16 -124.666145 35.666309 33 -124.624481 35.666309 87 -124.582809 35.666309 114 -124.541145 35.666309 144 -124.499474 35.666309 218 -124.457809 35.666309 291 -124.416145 35.666309 270 -124.374474 35.666309 248 -124.332809 35.666309 198 -124.291145 35.666309 106 -124.249474 35.666309 47 -124.207809 35.666309 30 -124.166138 35.666309 21 -124.124474 35.666309 9 -124.082809 35.666309 -8 -124.041138 35.666309 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-163 -106.249329 35.666309 -174 -106.207664 35.666309 -178 -106.166000 35.666309 -180 -106.124329 35.666309 -175 -106.082664 35.666309 -177 -106.040993 35.666309 -176 -105.999329 35.666309 -161 -105.957664 35.666309 -94 -105.915993 35.666309 16 -105.874329 35.666309 51 -105.832664 35.666309 36 -105.790993 35.666309 22 -105.749329 35.666309 40 -105.707657 35.666309 -220 -105.665993 35.666309 -272 -105.624329 35.666309 -243 -105.582657 35.666309 -228 -105.540993 35.666309 -194 -105.499329 35.666309 -143 -105.457657 35.666309 0 -105.415993 35.666309 91 -105.374321 35.666309 149 -105.332657 35.666309 152 -105.290993 35.666309 101 -105.249321 35.666309 83 -105.207657 35.666309 163 -105.165993 35.666309 290 -105.124321 35.666309 352 -105.082657 35.666309 368 -105.040985 35.666309 348]; m = A(:,3); dx = 3.7641; maxx = 479*dx; x = [0:dx:maxx]; xi = [0:1.0:1803]; % interpolate data to have 1 km spacing mi = interp1(x,m,xi,'spline'); plot(xi,mi,'-r')