[gradsusr] Descriptor file
Jennifer Adams
jma at cola.iges.org
Mon May 19 10:37:35 EDT 2014
Change your variable declaration
from :
> sst 0 t,z,y,x Lake Surface Temperature
to:
sst 0 t,y,x Lake Surface Temperature
The sst variable doesn't vary in Z.
Also, your XDEF and YDEF statments don't match the ncdump output. The lon increment seems to be fixed at 0.00626, but the lat increment is not constant, so you should use
XDEF 640 linear 31 0.00626
YDEF 560 levels -3 -2.993739 … 0.5
You might also need 'options yrev' since your latitudes are listed from north to south and GrADS wants it the other way around.
--Jennifer
On May 19, 2014, at 10:20 AM, james nyaga wrote:
> Hello,
>
> I am having problems plotting data on my NCL generated netcdf file. Here is the output of ncdump -c file, the descriptor file I am using to plot and the error am getting.
>
> ***ncdump -c "file" output ****
> servir1 at servir1:/media/satellite/Lake_victoria/victoria_proc/l2/sst/hdf$ ncdump -c chlorophyl.nc
> netcdf chlorophyl {
> dimensions:
> lat = 560 ;
> lon = 640 ;
> time = 134 ;
> variables:
> float time(time) ;
> time:units = "months" ;
> time:long_name = "elapsed time" ;
> float lat(lat) ;
> lat:units = "degrees_north" ;
> lat:long_name = "latitude" ;
> float lon(lon) ;
> lon:units = "degrees_east" ;
> lon:long_name = "longitude" ;
> float sst(lat, lon, time) ;
> sst:_FillValue = 1.e+32f ;
> sst:units = "K" ;
> sst:long_name = "Aqua Modis Chlorophyll" ;
>
> // global attributes:
> :timestamp = "Mon May 19 12:10:23 EAT 2014" ;
> :description = "This file tests NCL\'s ability to create Ocean Color files" ;
> data:
>
> time = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
> 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
> 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
> 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
> 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
> 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
> 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
> 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133 ;
>
> lat = 0.5, 0.4937388, 0.4874776, 0.4812165, 0.4749553, 0.4686941, 0.4624329,
> 0.4561717, 0.4499106, 0.4436494, 0.4373882, 0.431127, 0.4248658,
> 0.4186046, 0.4123435, 0.4060823, 0.3998211, 0.3935599, 0.3872987,
> 0.3810376, 0.3747764, 0.3685152, 0.362254, 0.3559929, 0.3497317,
> 0.3434705, 0.3372093, 0.3309481, 0.3246869, 0.3184258, 0.3121646,
> 0.3059034, 0.2996422, 0.293381, 0.2871199, 0.2808587, 0.2745975,
> 0.2683363, 0.2620751, 0.255814, 0.2495528, 0.2432916, 0.2370304,
> 0.2307692, 0.224508, 0.2182469, 0.2119857, 0.2057245, 0.1994633,
> 0.1932022, 0.186941, 0.1806798, 0.1744186, 0.1681574, 0.1618962,
> 0.1556351, 0.1493739, 0.1431127, 0.1368515, 0.1305903, 0.1243292,
> 0.118068, 0.1118068, 0.1055456, 0.09928443, 0.09302326, 0.08676208,
> 0.08050089, 0.07423972, 0.06797853, 0.06171735, 0.05545617, 0.04919499,
> 0.04293381, 0.03667263, 0.03041145, 0.02415027, 0.01788909, 0.01162791,
> 0.005366726, -0.0008944544, -0.007155635, -0.01341682, -0.019678,
> -0.02593918, -0.03220036, -0.03846154, -0.04472272, -0.0509839,
> -0.05724508, -0.06350626, -0.06976745, -0.07602862, -0.0822898,
> -0.08855098, -0.09481216, -0.1010733, -0.1073345, -0.1135957, -0.1198569,
> -0.1261181, -0.1323792, -0.1386404, -0.1449016, -0.1511628, -0.157424,
> -0.1636852, -0.1699463, -0.1762075, -0.1824687, -0.1887299, -0.1949911,
> -0.2012522, -0.2075134, -0.2137746, -0.2200358, -0.226297, -0.2325581,
> -0.2388193, -0.2450805, -0.2513417, -0.2576029, -0.263864, -0.2701252,
> -0.2763864, -0.2826476, -0.2889088, -0.2951699, -0.3014311, -0.3076923,
> -0.3139535, -0.3202147, -0.3264759, -0.332737, -0.3389982, -0.3452594,
> -0.3515206, -0.3577818, -0.3640429, -0.3703041, -0.3765653, -0.3828265,
> -0.3890876, -0.3953488, -0.40161, -0.4078712, -0.4141324, -0.4203936,
> -0.4266547, -0.4329159, -0.4391771, -0.4454383, -0.4516995, -0.4579606,
> -0.4642218, -0.470483, -0.4767442, -0.4830054, -0.4892665, -0.4955277,
> -0.5017889, -0.5080501, -0.5143113, -0.5205724, -0.5268337, -0.5330948,
> -0.539356, -0.5456172, -0.5518783, -0.5581396, -0.5644007, -0.5706619,
> -0.5769231, -0.5831842, -0.5894454, -0.5957066, -0.6019678, -0.608229,
> -0.6144902, -0.6207513, -0.6270126, -0.6332737, -0.6395349, -0.6457961,
> -0.6520572, -0.6583184, -0.6645796, -0.6708408, -0.677102, -0.6833631,
> -0.6896243, -0.6958855, -0.7021467, -0.7084079, -0.714669, -0.7209302,
> -0.7271914, -0.7334526, -0.7397138, -0.745975, -0.7522361, -0.7584973,
> -0.7647585, -0.7710197, -0.7772809, -0.783542, -0.7898032, -0.7960644,
> -0.8023256, -0.8085868, -0.8148479, -0.8211091, -0.8273703, -0.8336315,
> -0.8398927, -0.8461539, -0.852415, -0.8586762, -0.8649374, -0.8711986,
> -0.8774598, -0.8837209, -0.8899821, -0.8962433, -0.9025044, -0.9087657,
> -0.9150268, -0.921288, -0.9275492, -0.9338104, -0.9400716, -0.9463328,
> -0.9525939, -0.9588551, -0.9651163, -0.9713774, -0.9776387, -0.9838998,
> -0.990161, -0.9964222, -1.002683, -1.008945, -1.015206, -1.021467,
> -1.027728, -1.033989, -1.04025, -1.046512, -1.052773, -1.059034,
> -1.065295, -1.071556, -1.077818, -1.084079, -1.09034, -1.096601,
> -1.102862, -1.109123, -1.115385, -1.121646, -1.127907, -1.134168,
> -1.140429, -1.14669, -1.152952, -1.159213, -1.165474, -1.171735,
> -1.177996, -1.184258, -1.190519, -1.19678, -1.203041, -1.209302,
> -1.215564, -1.221825, -1.228086, -1.234347, -1.240608, -1.246869,
> -1.253131, -1.259392, -1.265653, -1.271914, -1.278175, -1.284436,
> -1.290698, -1.296959, -1.30322, -1.309481, -1.315742, -1.322004,
> -1.328265, -1.334526, -1.340787, -1.347048, -1.35331, -1.359571,
> -1.365832, -1.372093, -1.378354, -1.384615, -1.390877, -1.397138,
> -1.403399, -1.40966, -1.415921, -1.422182, -1.428444, -1.434705,
> -1.440966, -1.447227, -1.453488, -1.45975, -1.466011, -1.472272,
> -1.478533, -1.484794, -1.491055, -1.497317, -1.503578, -1.509839,
> -1.5161, -1.522361, -1.528623, -1.534884, -1.541145, -1.547406,
> -1.553667, -1.559928, -1.56619, -1.572451, -1.578712, -1.584973,
> -1.591234, -1.597496, -1.603757, -1.610018, -1.616279, -1.62254,
> -1.628801, -1.635063, -1.641324, -1.647585, -1.653846, -1.660107,
> -1.666368, -1.67263, -1.678891, -1.685152, -1.691413, -1.697674,
> -1.703936, -1.710197, -1.716458, -1.722719, -1.72898, -1.735242,
> -1.741503, -1.747764, -1.754025, -1.760286, -1.766547, -1.772809,
> -1.77907, -1.785331, -1.791592, -1.797853, -1.804114, -1.810376,
> -1.816637, -1.822898, -1.829159, -1.83542, -1.841682, -1.847943,
> -1.854204, -1.860465, -1.866726, -1.872988, -1.879249, -1.88551,
> -1.891771, -1.898032, -1.904293, -1.910555, -1.916816, -1.923077,
> -1.929338, -1.935599, -1.94186, -1.948122, -1.954383, -1.960644,
> -1.966905, -1.973166, -1.979428, -1.985689, -1.99195, -1.998211,
> -2.004472, -2.010733, -2.016995, -2.023256, -2.029517, -2.035778,
> -2.042039, -2.048301, -2.054562, -2.060823, -2.067084, -2.073345,
> -2.079607, -2.085868, -2.092129, -2.09839, -2.104651, -2.110912,
> -2.117173, -2.123435, -2.129696, -2.135957, -2.142218, -2.148479,
> -2.154741, -2.161002, -2.167263, -2.173524, -2.179785, -2.186047,
> -2.192308, -2.198569, -2.20483, -2.211091, -2.217352, -2.223614,
> -2.229875, -2.236136, -2.242397, -2.248658, -2.25492, -2.261181,
> -2.267442, -2.273703, -2.279964, -2.286225, -2.292487, -2.298748,
> -2.305009, -2.31127, -2.317531, -2.323792, -2.330054, -2.336315,
> -2.342576, -2.348837, -2.355098, -2.36136, -2.367621, -2.373882,
> -2.380143, -2.386404, -2.392665, -2.398927, -2.405188, -2.411449,
> -2.41771, -2.423971, -2.430233, -2.436494, -2.442755, -2.449016,
> -2.455277, -2.461539, -2.4678, -2.474061, -2.480322, -2.486583,
> -2.492844, -2.499105, -2.505367, -2.511628, -2.517889, -2.52415,
> -2.530411, -2.536673, -2.542934, -2.549195, -2.555456, -2.561717,
> -2.567979, -2.57424, -2.580501, -2.586762, -2.593023, -2.599284,
> -2.605546, -2.611807, -2.618068, -2.624329, -2.63059, -2.636852,
> -2.643113, -2.649374, -2.655635, -2.661896, -2.668157, -2.674419,
> -2.68068, -2.686941, -2.693202, -2.699463, -2.705724, -2.711986,
> -2.718247, -2.724508, -2.730769, -2.737031, -2.743292, -2.749553,
> -2.755814, -2.762075, -2.768336, -2.774597, -2.780859, -2.78712,
> -2.793381, -2.799642, -2.805903, -2.812165, -2.818426, -2.824687,
> -2.830948, -2.837209, -2.843471, -2.849732, -2.855993, -2.862254,
> -2.868515, -2.874776, -2.881037, -2.887299, -2.89356, -2.899821,
> -2.906082, -2.912344, -2.918605, -2.924866, -2.931127, -2.937388,
> -2.943649, -2.949911, -2.956172, -2.962433, -2.968694, -2.974955,
> -2.981216, -2.987478, -2.993739, -3 ;
>
> lon = 31, 31.00626, 31.01252, 31.01878, 31.02504, 31.0313, 31.03756,
> 31.04382, 31.05008, 31.05634, 31.0626, 31.06886, 31.07512, 31.08138,
> 31.08764, 31.0939, 31.10016, 31.10642, 31.11268, 31.11894, 31.1252,
> 31.13145, 31.13771, 31.14397, 31.15023, 31.15649, 31.16275, 31.16901,
> 31.17527, 31.18153, 31.18779, 31.19405, 31.20031, 31.20657, 31.21283,
> 31.21909, 31.22535, 31.23161, 31.23787, 31.24413, 31.25039, 31.25665,
> 31.26291, 31.26917, 31.27543, 31.28169, 31.28795, 31.29421, 31.30047,
> 31.30673, 31.31299, 31.31925, 31.32551, 31.33177, 31.33803, 31.34429,
> 31.35055, 31.35681, 31.36307, 31.36933, 31.37559, 31.38185, 31.38811,
> 31.39437, 31.40063, 31.40689, 31.41315, 31.4194, 31.42566, 31.43192,
> 31.43818, 31.44444, 31.4507, 31.45696, 31.46322, 31.46948, 31.47574,
> 31.482, 31.48826, 31.49452, 31.50078, 31.50704, 31.5133, 31.51956,
> 31.52582, 31.53208, 31.53834, 31.5446, 31.55086, 31.55712, 31.56338,
> 31.56964, 31.5759, 31.58216, 31.58842, 31.59468, 31.60094, 31.6072,
> 31.61346, 31.61972, 31.62598, 31.63224, 31.6385, 31.64476, 31.65102,
> 31.65728, 31.66354, 31.6698, 31.67606, 31.68232, 31.68858, 31.69484,
> 31.7011, 31.70736, 31.71362, 31.71988, 31.72614, 31.7324, 31.73866,
> 31.74491, 31.75117, 31.75743, 31.76369, 31.76995, 31.77621, 31.78247,
> 31.78873, 31.79499, 31.80125, 31.80751, 31.81377, 31.82003, 31.82629,
> 31.83255, 31.83881, 31.84507, 31.85133, 31.85759, 31.86385, 31.87011,
> 31.87637, 31.88263, 31.88889, 31.89515, 31.90141, 31.90767, 31.91393,
> 31.92019, 31.92645, 31.93271, 31.93897, 31.94523, 31.95149, 31.95775,
> 31.96401, 31.97027, 31.97653, 31.98279, 31.98905, 31.99531, 32.00156,
> 32.00782, 32.01408, 32.02034, 32.0266, 32.03286, 32.03912, 32.04538,
> 32.05164, 32.0579, 32.06416, 32.07042, 32.07668, 32.08294, 32.0892,
> 32.09546, 32.10172, 32.10798, 32.11424, 32.1205, 32.12676, 32.13302,
> 32.13928, 32.14554, 32.1518, 32.15806, 32.16432, 32.17058, 32.17684,
> 32.1831, 32.18936, 32.19562, 32.20188, 32.20814, 32.2144, 32.22066,
> 32.22692, 32.23318, 32.23944, 32.2457, 32.25196, 32.25822, 32.26448,
> 32.27074, 32.277, 32.28326, 32.28952, 32.29578, 32.30204, 32.30829,
> 32.31455, 32.32081, 32.32707, 32.33333, 32.33959, 32.34585, 32.35211,
> 32.35837, 32.36463, 32.37089, 32.37715, 32.38341, 32.38967, 32.39593,
> 32.40219, 32.40845, 32.41471, 32.42097, 32.42723, 32.43349, 32.43975,
> 32.44601, 32.45227, 32.45853, 32.46479, 32.47105, 32.47731, 32.48357,
> 32.48983, 32.49609, 32.50235, 32.50861, 32.51487, 32.52113, 32.52739,
> 32.53365, 32.53991, 32.54617, 32.55243, 32.55869, 32.56495, 32.57121,
> 32.57747, 32.58372, 32.58998, 32.59624, 32.6025, 32.60876, 32.61502,
> 32.62128, 32.62754, 32.6338, 32.64006, 32.64632, 32.65258, 32.65884,
> 32.6651, 32.67136, 32.67762, 32.68388, 32.69014, 32.6964, 32.70266,
> 32.70892, 32.71518, 32.72144, 32.7277, 32.73396, 32.74022, 32.74648,
> 32.75274, 32.759, 32.76526, 32.77152, 32.77778, 32.78404, 32.7903,
> 32.79656, 32.80282, 32.80908, 32.81534, 32.8216, 32.82785, 32.83411,
> 32.84037, 32.84663, 32.85289, 32.85915, 32.86541, 32.87167, 32.87793,
> 32.88419, 32.89045, 32.89671, 32.90297, 32.90923, 32.91549, 32.92175,
> 32.92801, 32.93427, 32.94053, 32.94679, 32.95305, 32.95931, 32.96557,
> 32.97183, 32.97809, 32.98435, 32.99061, 32.99687, 33.00313, 33.00939,
> 33.01565, 33.02191, 33.02817, 33.03443, 33.04069, 33.04695, 33.05321,
> 33.05947, 33.06573, 33.07199, 33.07825, 33.08451, 33.09077, 33.09703,
> 33.10329, 33.10955, 33.11581, 33.12207, 33.12833, 33.13459, 33.14085,
> 33.14711, 33.15337, 33.15963, 33.16589, 33.17215, 33.1784, 33.18466,
> 33.19092, 33.19718, 33.20344, 33.2097, 33.21596, 33.22222, 33.22848,
> 33.23474, 33.241, 33.24726, 33.25352, 33.25978, 33.26604, 33.2723,
> 33.27856, 33.28482, 33.29108, 33.29734, 33.3036, 33.30986, 33.31612,
> 33.32238, 33.32864, 33.3349, 33.34116, 33.34742, 33.35368, 33.35994,
> 33.3662, 33.37246, 33.37872, 33.38498, 33.39124, 33.3975, 33.40376,
> 33.41002, 33.41628, 33.42253, 33.42879, 33.43505, 33.44131, 33.44757,
> 33.45383, 33.46009, 33.46635, 33.47261, 33.47887, 33.48513, 33.49139,
> 33.49765, 33.50391, 33.51017, 33.51643, 33.52269, 33.52895, 33.53521,
> 33.54147, 33.54773, 33.55399, 33.56025, 33.56651, 33.57277, 33.57903,
> 33.58529, 33.59155, 33.59781, 33.60407, 33.61033, 33.61659, 33.62285,
> 33.62911, 33.63537, 33.64163, 33.64789, 33.65415, 33.66041, 33.66667,
> 33.67293, 33.67919, 33.68545, 33.69171, 33.69796, 33.70422, 33.71048,
> 33.71674, 33.723, 33.72926, 33.73552, 33.74178, 33.74804, 33.7543,
> 33.76056, 33.76682, 33.77308, 33.77934, 33.7856, 33.79186, 33.79812,
> 33.80438, 33.81064, 33.8169, 33.82316, 33.82942, 33.83568, 33.84194,
> 33.8482, 33.85446, 33.86072, 33.86698, 33.87324, 33.8795, 33.88576,
> 33.89202, 33.89828, 33.90454, 33.9108, 33.91706, 33.92332, 33.92958,
> 33.93584, 33.9421, 33.94836, 33.95462, 33.96088, 33.96714, 33.9734,
> 33.97966, 33.98592, 33.99218, 33.99844, 34.0047, 34.01096, 34.01722,
> 34.02348, 34.02974, 34.036, 34.04226, 34.04851, 34.05477, 34.06103,
> 34.06729, 34.07355, 34.07981, 34.08607, 34.09233, 34.09859, 34.10485,
> 34.11111, 34.11737, 34.12363, 34.12989, 34.13615, 34.14241, 34.14867,
> 34.15493, 34.16119, 34.16745, 34.17371, 34.17997, 34.18623, 34.19249,
> 34.19875, 34.20501, 34.21127, 34.21753, 34.22379, 34.23005, 34.23631,
> 34.24257, 34.24883, 34.25508, 34.26134, 34.2676, 34.27386, 34.28012,
> 34.28638, 34.29264, 34.2989, 34.30516, 34.31142, 34.31768, 34.32394,
> 34.3302, 34.33646, 34.34272, 34.34898, 34.35524, 34.3615, 34.36776,
> 34.37402, 34.38028, 34.38654, 34.3928, 34.39906, 34.40532, 34.41158,
> 34.41784, 34.4241, 34.43036, 34.43662, 34.44288, 34.44914, 34.4554,
> 34.46166, 34.46792, 34.47418, 34.48044, 34.4867, 34.49296, 34.49922,
> 34.50548, 34.51174, 34.518, 34.52426, 34.53052, 34.53678, 34.54304,
> 34.5493, 34.55556, 34.56182, 34.56807, 34.57433, 34.58059, 34.58685,
> 34.59311, 34.59937, 34.60563, 34.61189, 34.61815, 34.62441, 34.63067,
> 34.63693, 34.64319, 34.64945, 34.65571, 34.66197, 34.66823, 34.67449,
> 34.68075, 34.68701, 34.69327, 34.69953, 34.70579, 34.71205, 34.71831,
> 34.72457, 34.73083, 34.73709, 34.74335, 34.74961, 34.75587, 34.76213,
> 34.76839, 34.77465, 34.78091, 34.78717, 34.79343, 34.79969, 34.80595,
> 34.81221, 34.81847, 34.82473, 34.83099, 34.83725, 34.84351, 34.84977,
> 34.85603, 34.86229, 34.86855, 34.87481, 34.88107, 34.88733, 34.89359,
> 34.89985, 34.90611, 34.91236, 34.91862, 34.92488, 34.93114, 34.9374,
> 34.94366, 34.94992, 34.95618, 34.96244, 34.9687, 34.97496, 34.98122,
> 34.98748, 34.99374, 35 ;
>
> **descriptor file**
> DSET /media/satellite/Lake_victoria/victoria_proc/l2/sst/hdf/chlorophyl.nc
> DTYPE netcdf
> TITLE Lake Surface Temperature
> UNDEF 1e+32
> OPTIONS sequential
> XDEF 640 LINEAR 31.0 0.00625
> YDEF 640 LINEAR -3 0.00625
> TDEF 134 LINEAR 1jul2002 1mo
> ZDEF 1 LEVELS 0
> VARS 1
> sst 0 t,z,y,x Lake Surface Temperature
> ENDVARS
>
> **Command line output (Using Ubuntu 12.04 linux 64 bit machine)**
> ga-> open chlorophyl.ctl
> Scanning description file: chlorophyl.ctl
> Data file /media/satellite/Lake_victoria/victoria_proc/l2/sst/hdf/chlorophyl.nc is open as file 1
> LON set to 31 34.9937
> LAT set to -3 0.99375
> LEV set to 0 0
> Time values set: 2002:7:1:0 2002:7:1:0
> E set to 1 1
> ga-> q file
> File 1 : Lake Surface Temperature
> Descriptor: chlorophyl.ctl
> Binary: /media/satellite/Lake_victoria/victoria_proc/l2/sst/hdf/chlorophyl.nc
> Type = Gridded
> Xsize = 640 Ysize = 640 Zsize = 1 Tsize = 134 Esize = 1
> Number of Variables = 1
> sst 0 t,z,y,x Lake Surface Temperature
> ga-> d sst
> gancgrid error: nc_get_vara_double failed; NetCDF: Start+count exceeds dimension bound
> Data Request Error: Error for variable 'sst'
> Error ocurred at column 1
> DISPLAY error: Invalid expression
> Expression = sst
>
> Could you help?
> sincerely,
> James
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030
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