int InterpFromMesh2dx(IssmSeqVec< IssmPDouble > **pdata_prime, int *index_data, double *x_data, double *y_data, int nods_data, int nels_data, double *data, int data_length, double *x_prime, double *y_prime, int nods_prime, double *default_values, int num_default_values, Contour< IssmPDouble > **contours, int numcontours)