removed matplotlib warnings about redundant linestyle definition

Author: bgoli

README.md

@@ -25,7 +25,7 @@ The following software is required before installing StochPy (see user guide for
 
 Install the StochPy dependencies with PIP using the following command (in your StochPy Python environment):
 ```bash
-pip install numpy matplotlib python-libsbml mpmath lxml
+pip install numpy scipy matplotlib python-libsbml mpmath lxml
 ```
 
 #### Linux/MAC OS/Cygwin

stochpy/modules/Analysis.py

@@ -470,7 +470,10 @@ def TimeSeries(self,data,npoints,datatype,labels,trajectory_index,linestyle,line
                 j=0
 
             if colors == None:
-                plt.plot(Arr_time,y,marker,ls = linestyle,lw = linewidth,color = self.colors[j])
+                if marker == '' and linestyle == 'solid':
+                    plt.plot(Arr_time,y, ls = linestyle,lw = linewidth,color = self.colors[j])
+                else:
+                    plt.plot(Arr_time,y,marker,ls = linestyle,lw = linewidth,color = self.colors[j])
             else:
                 if clr.is_color_like(colors[j]):
                     plt.plot(Arr_time,y,marker,ls = linestyle,lw = linewidth,color = colors[j])