pygmt.Figure.wiggle

Figure.wiggle(data=None, x=None, y=None, z=None, fillpositive=None, fillnegative=None, **kwargs)

Plot z=f(x,y) anomalies along tracks.

Takes a matrix, (x, y, z) triplets, or a file name as input and plots z as a function of distance along track.

Must provide either data or x, y, and z.

Full option list at https://docs.generic-mapping-tools.org/6.5/wiggle.html

Aliases:

B = frame D = position J = projection R = region T = track V = verbose W = pen

Z = scale b = binary c = panel d = nodata e = find f = coltypes

g = gap h = header i = incols p = perspective t = transparency w = wrap

Parameters:

• x/y/z (1-D arrays) – The arrays of x and y coordinates and z data points.

• data (str | PathLike | dict | ndarray | DataFrame | Dataset | GeoDataFrame | None, default: None) – Pass in either a file name to an ASCII data table, a 2-D numpy.ndarray, a pandas.DataFrame, an xarray.Dataset made up of 1-D xarray.DataArray data variables, or a geopandas.GeoDataFrame containing the tabular data. Use parameter incols to choose which columns are x, y, z, respectively.

• projection (str) – projcode[projparams/]width|scale. Select map projection.

• region (str or list) – xmin/xmax/ymin/ymax[+r][+uunit]. Specify the region of interest.

• scale (str or float) – Give anomaly scale in data-units/distance-unit. Append c, i, or p to indicate the distance unit (centimeters, inches, or points); if no unit is given we use the default unit that is controlled by PROJ_LENGTH_UNIT.

• frame (bool, str, or list) – Set map boundary frame and axes attributes.

• position (str) – [g|j|J|n|x]refpoint+wlength[+jjustify][+al|r][+odx[/dy]][+l[label]]. Define the reference point on the map for the vertical scale bar.

• fillpositive (str) – Set color or pattern for filling positive wiggles [Default is no fill].

• fillnegative (str) – Set color or pattern for filling negative wiggles [Default is no fill].

• track (str) – Draw track [Default is no track]. Append pen attributes to use [Default is "0.25p,black,solid"].

• verbose (bool or str) – Select verbosity level [Full usage].

• pen (str) – Specify outline pen attributes [Default is no outline].

• binary (bool or str) –

  i|o[ncols][type][w][+l|b]. Select native binary input (using binary="i") or output (using binary="o"), where ncols is the number of data columns of type, which must be one of:

  • c: int8_t (1-byte signed char)

  • u: uint8_t (1-byte unsigned char)

  • h: int16_t (2-byte signed int)

  • H: uint16_t (2-byte unsigned int)

  • i: int32_t (4-byte signed int)

  • I: uint32_t (4-byte unsigned int)

  • l: int64_t (8-byte signed int)

  • L: uint64_t (8-byte unsigned int)

  • f: 4-byte single-precision float

  • d: 8-byte double-precision float

  • x: use to skip ncols anywhere in the record

  For records with mixed types, append additional comma-separated combinations of ncols type (no space). The following modifiers are supported:

  • w after any item to force byte-swapping.

  • +l|b to indicate that the entire data file should be read as little- or big-endian, respectively.

  Full documentation is at https://docs.generic-mapping-tools.org/6.5/gmt.html#bi-full.

• panel (bool, int, or list) –

  Select a specific subplot panel. Only allowed when used in Figure.subplot mode.

  • True to advance to the next panel in the selected order.

  • index to specify the index of the desired panel.

  • (row, col) to specify the row and column of the desired panel.

  The panel order is determined by the Figure.subplot method. row, col and index all start at 0.

• nodata (str) – i|onodata. Substitute specific values with NaN (for tabular data). For example, nodata="-9999" will replace all values equal to -9999 with NaN during input and all NaN values with -9999 during output. Prepend i to the nodata value for input columns only. Prepend o to the nodata value for output columns only.

• find (str) – [~]“pattern” | [~]/regexp/[i]. Only pass records that match the given pattern or regular expressions [Default processes all records]. Prepend ~ to the pattern or regexp to instead only pass data expressions that do not match the pattern. Append i for case insensitive matching. This does not apply to headers or segment headers.

• coltypes (str) – [i|o]colinfo. Specify data types of input and/or output columns (time or geographical data). Full documentation is at https://docs.generic-mapping-tools.org/6.5/gmt.html#f-full.

• gap (str or list) –

  x|y|z|d|X|Y|Dgap[u][+a][+ccol][+n|p]. Examine the spacing between consecutive data points in order to impose breaks in the line. To specify multiple criteria, provide a list with each item containing a string describing one set of criteria.

  • x|X: define a gap when there is a large enough change in the x coordinates (uppercase to use projected coordinates).

  • y|Y: define a gap when there is a large enough change in the y coordinates (uppercase to use projected coordinates).

  • d|D: define a gap when there is a large enough distance between coordinates (uppercase to use projected coordinates).

  • z: define a gap when there is a large enough change in the z data. Use +ccol to change the z data column [Default col is 2 (i.e., 3rd column)].

  A unit u may be appended to the specified gap:

  • For geographic data (x|y|d), the unit may be arc- d(egrees), m(inutes), and s(econds) , or (m)e(ters), f(eet), k(ilometers), M(iles), or n(autical miles) [Default is (m)e(ters)].

  • For projected data (X|Y|D), the unit may be i(nches), c(entimeters), or p(oints).

  Append modifier +a to specify that all the criteria must be met [default imposes breaks if any one criterion is met].

  One of the following modifiers can be appended:

  • +n: specify that the previous value minus the current column value must exceed gap for a break to be imposed.

  • +p: specify that the current value minus the previous value must exceed gap for a break to be imposed.

• header (str) –

  [i|o][n][+c][+d][+msegheader][+rremark][+ttitle]. Specify that input and/or output file(s) have n header records [Default is 0]. Prepend i if only the primary input should have header records. Prepend o to control the writing of header records, with the following modifiers supported:

  • +d to remove existing header records.

  • +c to add a header comment with column names to the output [Default is no column names].

  • +m to add a segment header segheader to the output after the header block [Default is no segment header].

  • +r to add a remark comment to the output [Default is no comment]. The remark string may contain \n to indicate line-breaks.

  • +t to add a title comment to the output [Default is no title]. The title string may contain \n to indicate line-breaks.

  Blank lines and lines starting with # are always skipped.

• incols (str or 1-D array) –

  Specify data columns for primary input in arbitrary order. Columns can be repeated and columns not listed will be skipped [Default reads all columns in order, starting with the first (i.e., column 0)].

  • For 1-D array: specify individual columns in input order (e.g., incols=[1,0] for the 2nd column followed by the 1st column).

  • For str: specify individual columns or column ranges in the format start[:inc]:stop, where inc defaults to 1 if not specified, with columns and/or column ranges separated by commas (e.g., incols="0:2,4+l" to input the first three columns followed by the log-transformed 5th column). To read from a given column until the end of the record, leave off stop when specifying the column range. To read trailing text, add the column t. Append the word number to t to ingest only a single word from the trailing text. Instead of specifying columns, use incols="n" to simply read numerical input and skip trailing text. Optionally, append one of the following modifiers to any column or column range to transform the input columns:

    • +l to take the log10 of the input values.

    • +d to divide the input values by the factor divisor [Default is 1].

    • +s to multiple the input values by the factor scale [Default is 1].

    • +o to add the given offset to the input values [Default is 0].

• perspective (list or str) – [x|y|z]azim[/elev[/zlevel]][+wlon0/lat0[/z0]][+vx0/y0]. Select perspective view and set the azimuth and elevation angle of the viewpoint [Default is [180, 90]]. Full documentation is at https://docs.generic-mapping-tools.org/6.5/gmt.html#perspective-full.

• transparency (float) – Set transparency level, in [0-100] percent range [Default is 0, i.e., opaque]. Only visible when PDF or raster format output is selected. Only the PNG format selection adds a transparency layer in the image (for further processing).

• wrap (str) –

  y|a|w|d|h|m|s|cperiod[/phase][+ccol]. Convert the input x-coordinate to a cyclical coordinate, or a different column if selected via +ccol. The following cyclical coordinate transformations are supported:

  • y: yearly cycle (normalized)

  • a: annual cycle (monthly)

  • w: weekly cycle (day)

  • d: daily cycle (hour)

  • h: hourly cycle (minute)

  • m: minute cycle (second)

  • s: second cycle (second)

  • c: custom cycle (normalized)

  Full documentation is at https://docs.generic-mapping-tools.org/6.5/gmt.html#w-full.

Examples using pygmt.Figure.wiggle

Wiggle along tracks

Wiggle along tracks

Bit and hachure patterns

Bit and hachure patterns