from geoscilabs.dcip.DC_cylinder import cylinder_app
For a direct current resistivity (DCR) survey, currents are injected to the earth, and flow. Depending upon the conductivity contrast current flow in the earth will be distorted, and these changes can be measurable on the sufurface electrodes. Here, we focus on a cylinder target embedded in a halfspace, and investigate what are happening in the earth when static currents are injected. Different from a sphere case, which is a finite target, "coupling" among Tx, target (conductor or resistor), and Rx will be significanlty different upon various scenarios. By investigating changes in currents, electric fields, potential, and charges upon different geometry of cylinder and survey, Tx and Rx location, we understand geometric effects of the target for DCR survey.