...
ASCII import menu
- Browse in the dataset. adjust Geocap lets you browse in several datasets, enabling you to import them in one go, presuming they have the same formatting.
- Adjust the header spinbox so that header information is displayed in the header preview and the data is displayed in the data preview sections. Header preview will not be apart of the imported dataset.
- Set whether or not the file data columns are separated by white space or some other character. If your column separator is not on the list select Myseperator and type in the wished string. If your data is of type fixed width, tick the fixed columns box, and set the width of your specified columns.
- Geocap can read your data in X and Y's or in latitudes and longitudes. If your data is in latitudes and longitudes, you can choose between a variety of variants, e.g. decimal (deg) or DDMMSSSS.
- The Scalars field S can be used to read an "extra" data attribute. For instance when reading velocity data, Geocap recommends the user to read the velocities as the scalar field S. Geocap will expect the user to read X Y Z S where Z is the time value, and S is the velocity. Another example of the use of scalar is when reading interpretation data where the scalar can hold the amplitude.
- If your data has more fields than X, Y, Z and S, it is possible to add new fields. Add the extra attributes/fields as required. For each new file column defined, one needs to give the column a name, and also to specify whether the data input for this column is numeric or text.
- It is important that the user specifies which file column contains what data. In the example above, the following columns are defined: X-1, 2-Y, 3-Z, 4-SP, and 8-LineName(cell separator).
- Specify if your data is line or points. The main difference is that line data will be displayed as lines, and points data as points. In the example given above, interpretation data is read as lines to produce better display the header in the upper header part and the data in the lower data part.
#
#options (e.g. the interpretation along the 2D lines displayed as lines and not points). - For both line and point data, it is possible to separate one dataset into separate cells. Sometimes this is necessary for display purposes, e.g. a coastline where each island along the coast has to be a separate cell (or else it would be impossible to display the data without connecting lines going from one island to the next). Another example of a dataset where cell separation is necessary, is velocity pairs, where all pairs from one analysis (SP) belong to one cell. In the example above, the cell separator is set to value change in column number 8 congaing the Seismic 2D line names, meaning that when displaying these data they will be displayed as lines (each cell one line).
- Geocap can also create many dataset from reading one single file. For instance, if you want to separate the interpretation data in the example dataset above into separate datasets, one for each seismic 2D line, then you would set Seperate datasets to Value change and the Data separator column number to 8 which contains the Line Name.
- It is also possible for Geocap to generate project folders based on input data. This option is always used in combination with the Separate dataset option. One example could be to import seismic velocities for many seismic vintages, where the year of acquisition was specified in one column. It would then be possible to set folder creation based on Year, Dataset creation based on Seismic survey, and cell separation based on SP change.
- Set the correct Schema for your dataset type. Seismic velocities would for instance be read under the schema Stacking Velocities
ASCII import is used when:
...