Both the snap_map.csv and history.csv files are ascii dumps of the binaries produced by Wave3D. The coordinate system is: i=X=positive east j=Y=positive north k=Z=positive up snap_map.csv: - snapid: ID number to connect snap_map.csv to snap_values.csv - pointidstart: first point in snap_values.csv that belongs to this snapshot - ivnum: indicates the variable recorded by this snapshot (note that that the mXrap descriptions flip the Y/Z components relative to Wave3D, because Z=positive up in mXrap) - time: time that this snapshot was taken / starting time for line histories - time2: end time for line histories - i1, i2, j1, j2, k1, k2: range of the snapshot, in wave grid coordinates - hdir: wave axis used as the major direction of this snapshot. In terms of the snapshot values, this is the first component of ordering. hdir can be ‘t’,’i’,’j’,k’ – ‘ t’ if it is a line history - vdir: wave axis used as the minor direction of this snapshot. In terms of the snapshot values, this is the second component of ordering. For a snapshot with i1=1, i2=10, j1=1, j2=10, with hdir=i, vdir=j, then the snapshot values will have (i,j) of (1,1), (1,2), (1,3), ...(1,10), (2,1), (2,2), … (10,10). - dh: actual distance between snapshot points along the ‘hdir’ axis (i.e. grid spacing * ihstp) - dv: as above, but along the ‘vdir’ axis - ihstp: spacing (in number of grid points) between samples along the ‘hdir’ axis (e.g. when using a snapshot that samples every Nth grid point) - ivstp: spacing (in number of grid points) between samples along the ‘vdir’ axis - ihqty: number of sampled grid points along the ‘hdir’ axis - ivqty: number of sampled grid points along the ‘vdir’ axis - smax: highest sampled value across all grid points for this snapshot - smin: lowest sampled value across all grid points for this snapshot - ignum: a link to the correct geometry step / number for models where the geometry changes - igid: random number associated with a geometry. The reason was for wvplot (legacy code) to distinguish the correct geometry Applies when different models have been combined into a single file (using addwav and addwavz) - zchars1, zchars2: extra characters at the end of the snapshot map entry history.csv: - historyid: to link to history_values.csv - ivnum: variable being recorded, as for snap_map.csv above - htbeg: time that history begins - time: the end time (the time the history is written) - i1, i2, j1, j2, k1, k2: coordinates of history. Histories are used for “1D” data; line histories are recorded in snapshots as “2D” data - ax1: sampling axis of the history sample (usually ‘t’ for time but can be 'i','j','k' or 't') - dax1: actual change across ax1 between each sample (e.g. the time between each sample) - idax1: requested step between each sample in integer units (e.g. ‘sample every 10th cycle’), which would make dax1 = (cycle time delta) * idax1, for the ax1=t case - isz: number of samples in this history entry - smax: highest sampled value for this history entry - smin: lowest sampled value for this history entry - ignum: a link to the correct geometry step / number for models where the geometry changes - igid: random number associated with a geometry. The reason was for wvplot (legacy code) to distinguish the correct geometry Applies when different models have been combined into a single file (using addwav and addwavz)