Interpolation

nika

Hi, I'm trying to interpolate my results back to a grid. I'm using

=InterpFromMeshToGrid(index,x,y,data,xmin,ymax,xposting,yposting,nlines,ncols,default_value)

but I'm not sure what index, posting and nlines stand for

Thank you forward,

Veronika

mathieumorlighem

Hi Veronika

if you type InterpFromMeshToGrid, you will get the help:


INTERPFROMMESHTOGRID - interpolation of a data defined on a mesh onto a grid

   This function is a multi-threaded mex file that interpolates a field
   defined on a triangular mesh onto a regular grid

   Usage:
      =InterpFromMeshToGrid(index,x,y,data,xmin,ymax,xposting,yposting,nlines,ncols,default_value)

      index,x,y: delaunay triangulation defining the mesh.
      meshdata: vertex values of data to be interpolated.
      xmin,ymax,posting,nlines,ncols: parameters that define the grid
      default_value: value of points located out of the mesh.

Here is an example of how you can use it:


      =InterpFromMeshToGrid(md.mesh.elements,md.mesh.x,md.mesh.y,md.inversion.vx_obs,...
         min(md.mesh.x),max(md.mesh.y),100,100,(max(md.mesh.y)-min(md.mesh.y))/100,(max(md.mesh.x)-min(md.mesh.x))/100,NaN);

This will create a 100x100 grid from md.inversion.vx_obs with NaN as a default value (when a point falls outside of the mesh).

Mathieu

nika

Hi Mathieu,

Thank you, but unfortunately when I'm using this function I'm getting:

------------------------------------------------------------------------

Segmentation violation detected at Thu Nov 6 13 2014

------------------------------------------------------------------------

Configuration:

Crash Decoding : Disabled

Current Visual : None

Default Encoding: ISO-8859-1

MATLAB Root : /Applications/MATLAB_R2012b.app

MATLAB Version : 8.0.0.783 (R2012b)

Operating System: Darwin 14.0.0 Darwin Kernel Version 14.0.0: Fri Sep 19 00 PDT 2014; root-2782.1.97~2/RELEASE_X86_64 x86_64

Processor ID : x86 Family 6 Model 58 Stepping 9, GenuineIntel

Virtual Machine : Java 1.6.0_65-b14-466.1-11M4716 with Apple Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode

Window System : No active display

Fault Count: 1

Abnormal termination:

Segmentation violation

RAX = 0000000000000000 RBX = 00000001393f0f36

RCX = 000000011085a650 RDX = 00000001390907fe

RSP = 000000010b0c7b30 RBP = 00007fff688e5e50

RSI = 000000011085a768 RDI = 000000011085a640

R8 = 000000013be54680 R9 = 000000011085a6f8

R10 = 0000000000000070 R11 = 00000001393f0f28

R12 = 000000011085a6f8 R13 = 000000011085a6f8

R14 = 000000011085a6c0 R15 = 0000000139090345

RIP = 0000000000000000 RFL = 200000011085a700

CS = 000000011085a768 FS = 000000011085a700 GS = 000000011085a701

Stack Trace (from fault):

0x00000001000e4e46 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwfl.dylib+00036422 _ZN2fl4diag15stacktrace_base7captureERKNS0_14thread_contextEm+000150

0x00000001000e5af1 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwfl.dylib+00039665 fl_diag_terminate+000321

0x00000001000e7c34 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwfl.dylib+00048180 _ZN2fl4diag13terminate_logEPKcRKNS0_14thread_contextE+000100

0x00000001008e125e /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00315998 mnTrapCtrlc+000254

0x00000001008e2d24 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00322852 _Z32mnRunPathDependentInitializationv+003492

0x00000001008e313d /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00323901 _Z32mnRunPathDependentInitializationv+004541

0x00000001008e37f5 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00325621 _Z32mnRunPathDependentInitializationv+006261

0x00000001008e3945 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00325957 mnFatalSignalHandler+000149

0x00007fff8bf01f1a /usr/lib/system/libsystem_platform.dylib+00020250 _sigtramp+000026

0x0000000000000000 /usr/lib/system/libsystem_platform.dylib+18446603338168414208

0x0000000139090345 /Users/nika/Downloads/issm/trunk-jpl/lib/libISSMCore.0.dylib+00013125 _ZNSt3__1lsINS_11char_traitsIcEEEERNS_13basic_ostreamIcT_EES6_PKc+000053

0x000000013921a018 /Users/nika/Downloads/issm/trunk-jpl/lib/libISSMCore.0.dylib+01626136 _ZNK14ErrorException12MatlabReportEv+000296

0x000000010b0c4423 /Users/nika/Downloads/issm/trunk-jpl/lib/InterpFromMeshToGrid.mexmaci64+00013347 mexFunction+000515

0x000000010550aeca /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmex.dylib+00065226 mexRunMexFile+000090

0x0000000105506a29 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmex.dylib+00047657 _ZN7Mfh_mex30runMexFileWithSignalProtectionEiPP11mxArray_tagiS2_+000137

0x0000000105508038 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmex.dylib+00053304 _ZN7Mfh_mex13dispatch_fileEiPP11mxArray_tagiS2_+000232

0x00000001009dab43 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499

0x0000000100d8b5b2 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914

0x0000000100d9287f /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679

0x0000000100d934e6 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598

0x0000000100bc9b4f /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527

0x0000000100bf4b7e /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286

0x0000000100bf4c3b /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091

0x0000000100d39f16 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654

0x0000000100b277d9 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113

0x0000000100b9482a /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530

0x00000001009dab43 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499

0x0000000100b62904 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+01014020 _Z23inEvalPcodeHeaderToWordP15_memory_contextiPP11mxArray_tagP12_pcodeheaderP6Mfh_mpj+000260

0x0000000100b1c162 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+00725346 _Z25in_local_call_with_setjmpIN5boost3_bi6bind_tIvPFvP15_memory_contextPiPP11mxArray_tagP12_pcodeheaderjENS1_5list5INS1_5valueIS4_EENS0_3argILi1EEENSG_ILi2EEENSE_ISA_EENSE_IiEEEEEEE17inExecutionStatusT_S5_S8_b+000082

0x0000000100b187f5 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+00710645 _ZN7EvalLog6setLogEiPP11mxArray_tagiS2_+003381

0x0000000100b18b75 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwm_interpreter.dylib+00711541 _ZN7EvalLog6setLogEiPP11mxArray_tagiS2_+004277

0x00000001063fd58e /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwbridge.dylib+00058766 _Z28evalCommandWithLongjmpSafetyPKc+000094

0x00000001063fdd8b /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwbridge.dylib+00060811 _Z28evalCommandWithLongjmpSafetyRKSbItSt11char_traitsItESaItEE+000043

0x00000001063fe81d /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwbridge.dylib+00063517 _Z8mnParserv+001021

0x00000001008c4139 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00196921 _ZN11mcrInstance30mnParser_on_interpreter_threadEv+000041

0x000000010089e76b /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00042859 _ZN3mcr7runtime17InterpreterThread4Impl17InvocationRequest3runEv+000523

0x000000010089e925 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00043301 _ZN3mcr7runtime17InterpreterThread4Impl26invocation_request_handlerEl+000053

0x000000010042f574 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00107892 _ZN10eventqueue18UserEventQueueImpl5flushEv+000756

0x000000010042f79a /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00108442 _ZN10eventqueue8ReadPipeEib+000026

0x000000010042df26 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00102182 _ZN10eventqueue18UserEventQueueImpl9selectFcnEb+000326

0x0000000107d23a9d /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwuix.dylib+00170653 _ZN21uix_nodisplay_ppeHook16pollingDuringFcnEb+000045

0x00000001004d71b2 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00795058 _ZSt8for_eachIN9__gnu_cxx17__normal_iteratorIPN5boost8weak_ptrIN4sysq10ws_ppeHookEEESt6vectorIS6_SaIS6_EEEENS4_8during_FIS6_NS2_10shared_ptrIS5_EEEEET0_T_SH_SG_+000162

0x00000001004d8dab /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00802219 _ZN4sysq12ppe_for_eachINS_8during_FIN5boost8weak_ptrINS_10ws_ppeHookEEENS2_10shared_ptrIS4_EEEEEET_RKS9_+000203

0x00000001004d592c /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00788780 _ZN4sysq19ppePollingDuringFcnEb+000092

0x00000001004d5ac7 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00789191 _ZN4sysq11ppeMainLoopEiib+000119

0x00000001004d5c94 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00789652 _ZN4sysq11ppeLoopIfOKEiib+000132

0x00000001004d5e34 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwservices.dylib+00790068 _ZN4sysq20processPendingEventsEiib+000132

0x000000010089ea9f /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00043679 _ZN3mcr7runtime17InterpreterThread4Impl14process_eventsERKN5boost10shared_ptrIS2_EE+000223

0x000000010089f2ca /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00045770 _ZN3mcr7runtime17InterpreterThread4Impl3runERKN5boost10shared_ptrIS2_EEPNS2_12init_contextE+000282

0x0000000100897176 /Users/nika/Downloads/issm/trunk-jpl/externalpackages/matlab/install/bin/maci64/libmwmcr.dylib+00012662 _Z26run_init_and_handle_eventsPv+000054

0x00007fff8f06f2fc /usr/lib/system/libsystem_pthread.dylib+00013052 _pthread_body+000131

0x00007fff8f06f279 /usr/lib/system/libsystem_pthread.dylib+00012921 _pthread_body+000000

0x00007fff8f06d4b1 /usr/lib/system/libsystem_pthread.dylib+00005297 thread_start+000013

This error was detected while a MEX-file was running. If the MEX-file

is not an official MathWorks function, please examine its source code

for errors. Please consult the External Interfaces Guide for information

on debugging MEX-files.