diff --git a/gridoutput/plotcurv.py b/gridoutput/plotcurv.py
index dc44a2a..a03981b 100644
--- a/gridoutput/plotcurv.py
+++ b/gridoutput/plotcurv.py
@@ -9,7 +9,8 @@
 from matplotlib.pyplot import figure
 import xarray
 
-from gemini3d.grid.gridmodeldata import model2magcoords
+from gemini3d.grid.gridmodeldata import model2magcoords, model2geogcoords
+
 
 
 def plotcurv3D(
@@ -19,42 +20,83 @@ def plotcurv3D(
     lalt: int = 256,
     llon: int = 256,
     llat: int = 256,
+    coords: str = 'geomag'
 ):
     """plot dipole data vs. alt,lon,lat"""
+    if coords == 'geomag':
+        # grid data; wasteful and should only do a slice at a time???
+        alti, mloni, mlati, parmi = model2magcoords(xg, parm, lalt, llon, llat)
+        
+        # define slices indices
+        altref = 300e3
+        ialt = abs(alti - altref).argmin()
+        lonavg = cfg["sourcemlon"]
+        ilon = abs(mloni - lonavg).argmin()
+        latavg = cfg["sourcemlat"]
+        ilat = abs(mlati - latavg).argmin()
+        
 
-    # grid data; wasteful and should only do a slice at a time???
-    alti, mloni, mlati, parmi = model2magcoords(xg, parm, lalt, llon, llat)
-
-    # define slices indices
-    altref = 300e3
-    ialt = abs(alti - altref).argmin()
-    lonavg = cfg["sourcemlon"]
-    ilon = abs(mloni - lonavg).argmin()
-    latavg = cfg["sourcemlat"]
-    ilat = abs(mlati - latavg).argmin()
-
-    # plot various slices through the 3D domain
-    fg = figure()
-    axs = fg.subplots(1, 3)
-
-    ax = axs[0]
-    h = ax.pcolormesh(mloni, alti / 1e3, parmi[:, :, ilat], shading="nearest")
-    ax.set_xlabel("mlon")
-    ax.set_ylabel("alt")
-    fg.colorbar(h, ax=ax)
-
-    ax = axs[1]
-    h = ax.pcolormesh(mloni, mlati, parmi[ialt, :, :].transpose(), shading="nearest")
-    ax.set_xlabel("mlon")
-    ax.set_ylabel("mlat")
-    fg.colorbar(h, ax=ax)
 
-    ax = axs[2]
-    ax.pcolormesh(mlati, alti / 1e3, parmi[:, ilon, :], shading="nearest")
-    ax.set_xlabel("mlat")
-    ax.set_ylabel("alt")
-    fg.colorbar(h, ax=ax)
+        # plot various slices through the 3D domain
+        fg = figure(figsize=(14,6)) #change fig size
+        axs = fg.subplots(1, 3)
+        fg.subplots_adjust(left=.2, wspace=.3,right=1.2)
+        
+        ax = axs[0]
+        h = ax.pcolormesh(mloni, alti / 1e3, parmi[:, :, ilat], shading="nearest")
+        ax.set_xlabel("mlon")
+        ax.set_ylabel("alt")
+        fg.colorbar(h, ax=ax)
+    
+        ax = axs[1]
+        h = ax.pcolormesh(mloni, mlati, parmi[ialt, :, :].transpose(), shading="nearest")
+        ax.set_xlabel("mlon")
+        ax.set_ylabel("mlat")
+        fg.colorbar(h, ax=ax)
+    
+        ax = axs[2]
+        ax.pcolormesh(mlati, alti / 1e3, parmi[:, ilon, :], shading="nearest")
+        ax.set_xlabel("mlat")
+        ax.set_ylabel("alt")
+        fg.colorbar(h, ax=ax)
+    
+    elif coords == 'geog':
+        # grid data; wasteful and should only do a slice at a time???
+        #alti, mloni, mlati, parmi = model2magcoords(xg, parm, lalt, llon, llat)
+        alti, gloni, glati, parmi = model2geogcoords(xg, parm, lalt, llon, llat)
+        # define slices indices
+        altref = 300e3
+        ialt = abs(alti - altref).argmin()
+        lonavg = cfg["glon"]
+        ilon = abs(gloni - lonavg).argmin()
+        latavg = cfg["glat"]
+        ilat = int(glati.size/2)
 
+        # plot various slices through the 3D domain
+        fg = figure(figsize=(14,6)) #change fig size
+        axs = fg.subplots(1, 3)
+        fg.subplots_adjust(left=.2, wspace=.3,right=1.2)
+        
+        ax = axs[0]
+        h = ax.pcolormesh(gloni, alti / 1e3, parmi[:, :, ilat], shading="nearest")
+        ax.set_xlabel("glon")
+        ax.set_ylabel("alt")
+        fg.colorbar(h, ax=ax)
+    
+        ax = axs[1]
+        h = ax.pcolormesh(gloni, glati, parmi[ialt, :, :].transpose(), shading="nearest")
+        ax.set_xlabel("glon")
+        ax.set_ylabel("glat")
+        fg.colorbar(h, ax=ax)
+    
+        ax = axs[2]
+        ax.pcolormesh(glati, alti / 1e3, parmi[:, ilon, :], shading="nearest")
+        ax.set_xlabel("glat")
+        ax.set_ylabel("alt")
+        fg.colorbar(h, ax=ax)
+    
+    else:
+        print('"'+coords+'" coordinate input not recognized')
 
 # alt,lon plot for 2D dipole data
 def plotcurv2D(xg: dict[str, T.Any], parm: xarray.DataArray, lalt: int = 512, llat: int = 512):