Stretching an electrode.

The following electrodes can be 'stretched' or 'squashed':

any 2D electrode

any 3D whole electrode -that is, spheres, cylinders, cones or discs.

The user specifies:

(1) the stretching factor (which is less than 1 for squashing),

(2) the direction of stretching, by giving the coordinates of the two ends of any line that lies in the stretching direction, and

(3) the coordinates of the stationary point for the stretching -that is, the middle point about which the stretching occurs.

This option is illustrated in figures 2.2 and 2.3 in the Users Guide, in the 'standard' file cpo3d.dat and in the ‘shape’ files shap2d01, shap3d01, shap3d02 and shap3d03.

Return to general note on electrode subdivision

For users who are editing or constructing an 'input data file' without the use of the data-builder -that is, pre-processor:

But Manual editing is certainly not recommended -it is a relic from the time when the databuilder was not available All users are strongly encouraged to use the databuilder, which always gives the correct formats and which has many options for which the formats are not described or easily deduced.

The option is triggered by putting the letter 'x' in the 12th space of the line that controls the number of subdivisions.

Four further lines must then be added, the first of which gives the stretching factor, which can be greater or less than unity. The second and third lines define the direction of stretching, by giving the coordinates of the two ends of any line that lies in that direction. The last of the extra lines should give the coordinates of the stationary point for the stretching -that is, the middle point about which the stretching occurs.