Questions tagged [pyshp]
Pyshp is a pure Python shapefile library which can be used to read, write and edit ESRI shapefiles.
99
questions
0
votes
1
answer
28
views
Writing PolylineZ shapefile with pyshp [closed]
I am trying to write a POLYLINEZ file in Python with pyshp and find the documentation lacking... When importing a POLYLINEZ shapefile, the x,y values are separate from the z values. (sf.shape().points ...
- 3
1
vote
0
answers
20
views
Label coordinates that fall in a specific shapefile
I have a dataframe for individuals, each individual has X and Y coordinates, and I have a .shp file
that has a number of polygons.
individuals dataframe look like:
ind_ID
x_coordinates
y_coordinates
...
- 11
0
votes
1
answer
63
views
Retrieving coordinates using PyShp
I am working with historical wind track data, which can be found here.
How can I use pyshp to retrieve all the lat & lon along the windtrack correctly?
I used the following code found on a ...
- 1
3
votes
2
answers
184
views
pip install inside QGIS fails
As I am trying to import a pip module directly in the built-in python I need to install pyshp first. I am trying this directly inside qgis running
import pip
pip.main(['install', 'pyshp'])
...
- 2,494
3
votes
2
answers
197
views
Getting coordinates of individual polygon in shapefile
I just started working with shapefiles. I need to take polygon # 93 (Sea of Japan) in a large shapefile and build a sea map in bokeh Python.
How do I refer to a specific polygon in a shapefile?
...
- 33
0
votes
0
answers
37
views
Clip shapefile by polygon [duplicate]
I am trying to clip shapefile by polygon with following code but I had this error. How can I correct the error?
import shapefile
# Create a reader instance
r = shapefile.Reader(r"C:\Users\ADMIN\...
- 1
1
vote
0
answers
103
views
Split LineString with MultiPoint - Shapely
I want to split a LineString object at a MultiPoint object. I use the following code to do this. Among other things, I use the functions interpolate() and project() to snap the points onto the line ...
- 19
10
votes
2
answers
282
views
Sorting records by attribute in shapefile using PyShp
I know how to get records in a shapefile using PyShp, but how to sort records by an attribute (i.e., "NAME" or "POPULATION")?
My code:
import shapefile
file = "c:/data/cities....
- 115
4
votes
1
answer
88
views
Reading single row in PyShp with shapefile.Reader
I use PyShp and shapefile.Reader to read shapefile files.
If I want to read a whole file I use:
with shapefile.Reader(file) as shp:
for row_num, row in enumerate(shp.iterRecords()):
print(...
7
votes
2
answers
177
views
Python: shapefile.Reader, how to set up .iloc?
I would like to set up range of reading by shapefile.Reader. I couldn't find any suitable documentation.
I would like to read rows 0-100. In Pandas or GeoPandas I use df.iloc[0:100], but what should I ...
3
votes
0
answers
163
views
Editing shapefile adding fields with values with pyshp
I'm trying to add some fields to a shapefile using pyshp. The code I have to far is:
import shapefile
# Read in our existing shapefile
r = shapefile.Reader(r"C:\...\Edit_SHP\TracksLines.shp"...
- 43
1
vote
1
answer
75
views
Checking if geopoint is in shapefile containing world cities
I have approximately 13 million (lat,long) geocoordinates. I also have a shapefile containing 3460 cities.
I need to find the City in which this geocoordinate can be found.
This is what I am currently ...
- 11
3
votes
2
answers
83
views
Setting up a section using shapefile.Reader
I would like to open some shapefile with shapefile.Reader but I would like to see some part of it, for example 10000-20000 records. How to set up a section? I can't find that in documentation.
with ...
- 131
2
votes
0
answers
324
views
How to merge lines from shapefile using PyShp and Shapely and save them in a new shapefile?
I have files with line segments that cover road network of towns. The issue is that each street with specific name consists of smaller segments that I need to merge into one line covering the whole ...
- 113
0
votes
0
answers
51
views
How to check integrity of Python-processed shapefile
In my QGIS project of American railroads, using USGS Base Topo Layer and shapefiles giving railroad details as of 2015, I have used the Python-3 pyshp library to edit the dbf database, adding some ...
1
vote
0
answers
69
views
Differentiating between stacked parcel shapefile and general parcel shapefile using Python [closed]
I am totally new to this domain. I would like to detect stacked parcel shapefile and mapped respective data or outlines created to all stacked parcels. In a general case where only one parcel on land ...
- 235
2
votes
1
answer
176
views
I cannot manage to export coordinates to a shapefile using Python
This is the test code I have written:
import shapefile
w = shapefile.Writer(shapefile.POLYGON)
w.poly(parts=[[[1,5],[5,5],[5,1],[3,3],[1,1]]])
w.field('FIRST_FLD','C','40')
w.field('SECOND_FLD','C','...
- 23
4
votes
1
answer
234
views
Only integer part of field values read by pyshp when creating point shapefile from QGIS
While using flopy that bases some of the functions in the export.shapefile_utils module on pyshp (namely shp2recarray), I've come across a behavior I cannot understand.
Whenever I read some point data ...
- 91
1
vote
0
answers
100
views
Clipping a raster with a shapefile created with coordinates
I created a polygon shapefile this way:
def createShapefile(shapefileDir, ROI):
w = shp.Writer(shapefileDir, shapeType=shp.POLYGON)
w.field('FIRST_FLD','C','40')
w.record('poly1')
ROI = [[...
2
votes
2
answers
328
views
Clipping Shapefile in Pure Python
I am trying to implement the code found at this site: http://geospatialpython.com/2015/05/clipping-shapefile-in-pure-python.html
The function I am trying to implement:
import shapefile
# Create a ...
- 103
1
vote
1
answer
453
views
Does pyshp provide CRS?
I am using https://pypi.org/project/pyshp/ to read records and geometry. Is there a way to read CRS data without pyproj or fiona?
7
votes
1
answer
937
views
Creating new shapefile using pyshp
I am trying to strip data out of an existing shapefile to create new shapefiles. I have made the loop work, and made the new file, but I cannot work out why I cannot add records to the new file I am ...
- 103
0
votes
0
answers
229
views
Using pyshp to create line shapefiles with color
I am using PyShp to create line shapefile in Python.
w = shapefile.Writer('shapefiles/line')
w.field('name', 'C')
w.line([ [[3,2],[2,6]] ])
w.record('linestring1')
w.close()
Is there a way to ...
0
votes
1
answer
196
views
Writing shapefile of multiple geometry using Python [duplicate]
How to make a shapefile containing points, polygon, and line using python shapely or pyshp?
2
votes
0
answers
249
views
Shapefile or GeoJSON? [closed]
I'm interested in understanding the relative merits of using GeoJSON or shapefile formats for handling geo-spatial data, particularly in an open-source, Python (CKAN project), web-development context.
...
- 29
2
votes
1
answer
866
views
Rebuilding .shx using python/pyshp?
EDIT: I've tried running the code linked in the duplicate flag, it's posted here for reference, and it doesn't run. I had already referred to that answer in my initial post.
My problem
Downloaded ...
- 21
0
votes
1
answer
3k
views
Why is PyShp unable to open my .dbf or .shp files? [closed]
Trying to learn to use Python to map some geographic data by following some tutorial and I can't seem to get them to work. I'm hoping this is just a simple error on my part.
First, the link(s) to ...
- 1
3
votes
1
answer
1k
views
Setting reference frame for shapefile with pyshp?
I'm using pyshp to create new shapefiles with Python 3. My code runs without errors, but when I open the resulting file in ArcMap I get this error:
The following datasource you added is missing ...
- 495
1
vote
2
answers
1k
views
ShapefileException when reading shapefile using PyShp
I'm trying to read in a shapefile and keep getting a File Not Found error and this exception:
ShapefileException: Unable to open /Users/name/Documents/shapefile.shp
Here's what I've got:
import ...
- 11
4
votes
1
answer
488
views
Does pyshp read .prj files properly?
I want to read a shapefile using pyshp:
sf = shapefile.Reader(('/tmp/India_PCs_Boundary_4_2_19/India_PCs_Boundary.shp'))
but when I look at the result, the polygons look all squishy and distorted; ...
- 41
0
votes
3
answers
891
views
Convert CSV file in shapefile with pyshp/shapefile
I'm trying to convert a file.csv to a file.shp through the pyshp / shapefile module.
The content of the CSV is:
Lon,Lat,Vel,Dir
15.9576198620869825,41.1791119428255143,9.3949995040893555,92....
- 267
0
votes
1
answer
259
views
Splitting a Shapefile based off coordinates in Python using osgeo (ogr) or pyshp
I'm having trouble with splitting a shapefile of all the regions in Mongolia into a smaller shapefile based off some input coordinates.
The big shapefile I'm trying to split can be found here: https:/...
- 288
2
votes
1
answer
798
views
PyShp error: Object does not implement __geo_interface__
I'd like to convert geometry to WKT with pyshp and pygeoif using this suggestion, but pyshp throws a following error:
Traceback (most recent call last):
File "E:/!Projects/imScrape/...
- 3,343
1
vote
1
answer
282
views
PointZ elevation issue PYSHP
I have created a shapefile with approximately 300 feature of shapeType POINTZ. I can fill my attributs and define point.
Here is my function that i call for each feature:
def upd_shp(fn, geo, attr):
...
- 13
0
votes
1
answer
2k
views
Buffering point shapefile using gdal/ogr: how to copy over input attributes to output shp?
Editing my previous question which asked the best way to buffer a point shapefile in python to add more detail and clarity to what I'm looking for.
I have found a method here to iterate through an ...
- 1,445
4
votes
1
answer
697
views
Automating recording fields in a shapefile via pyshp
I am following the tutorial here for how to convert a csv to shp using pyshp. I am almost there, with one issue. In the tutorial, the person loops over the rows in the csv, and for each field, assigns ...
- 1,445
3
votes
1
answer
743
views
Working with shapefiles in Python
I am currently working on the problem of generating roads from Openstreetmap files. I use these Osm files to create a shapefile from all different road types with different roadway numbers, widths and ...
1
vote
2
answers
405
views
Converting .csv file to file.shp using Python gives IndexError?
I have a file.csv like the following:
37.0925854357,14.3860984446,0.0000079572,0.0000939491,0.0000028935
37.0978554286,14.5199850398,0.0000041594,0.0000821038,0.0000047924
37.1029267200,14.6538928343,...
- 267
1
vote
0
answers
140
views
Iterating over pyshp writer object records
The current branch of pyshp has removed the Editor class that combines reading and writing records. The justification is that removing the Editor has been planned for a while now, and might as well ...
- 201
2
votes
1
answer
1k
views
Converting coordinates from shapefile using python?
I am really new to working with this kind of data.
I have been trying to work with a shapefile that I wish to convert to geojson. The source has both shapefiles and geojson downloads available, but ...
- 31
1
vote
1
answer
3k
views
Python - Convert csv with unknown number of columns to shapefile
I have this script that converts a csv file to a shapefile. In this case I am specifying manually the name of columns header. Since now I have files with a big and always different number of columns, ...
- 31
3
votes
1
answer
511
views
Storing a geographic minimum spanning tree with PyShp
I have a list of geographic coordinates (longitudes, latitudes in decimal degrees) as follows:
-72.9833,10.6167
-63.1167,10.55
-63.1167,7.91667
-65.9667,10.3167
-67.4333,8.93333
-68.4,10.6167
-70....
- 155
3
votes
1
answer
488
views
Python pyshp reads some field values as None
Reading the records of AL082017_pts.shp in a recent hurricane path file with pyshp results in a lot of None.
Here's the first record:
sf = shapefile.Reader('AL082017_pts.shp')
print sf.record(0)
...
- 339
2
votes
1
answer
2k
views
Converting Shapefile points to Lat/Long?
Quick Overview of the Project: I have 9000 records of individuals, each with a coordinate pair in a csv. I also have a shapefile/folder(dbf, prj, sbn, sbx, shp, shx) of municipalities within the range ...
- 115
9
votes
2
answers
17k
views
Finding out if coordinate is within shapefile (.shp) using pyshp?
I'm trying to map coordinate data to a municipality. Reverse geocoders aren't as accurate as I need them to be (I was using geocoder pkg before), so I found a .shp that maps and names all the ...
- 115
9
votes
2
answers
5k
views
Using pyshp to read a file-like object from a zipped archive
Presume I have an archive, foo.zip. It contains the parts of a shapefile: foo.shp, foo.dbf, foo.shx, foo.prj, and foo.cpg. I want to work with this shapefile in python, using pyshp, AKA the shapefile ...
- 153
0
votes
0
answers
908
views
Plotting shapefiles with Pyshp in Python omits some shapes
I want to plot a cloropleth map of Scotland with Pyshp, but only a fraction of the shapes are plotted. The shapefile of Scotland has 32 shapes, and it is available here. The values dictating the ...
- 793
-1
votes
1
answer
64
views
Getting error while trying to save
I am getting error when I am trying to write out the file. Can somebody help me with this?
import shapefile
w=shapefile.Writer(shapefile.NEW_SHAPEFILE)
w.point(2,5)
w.point(2,2)
w.point(3,5)
w....
3
votes
1
answer
1k
views
Incorrect transformation when using pyproj
I am using pyproj to work with shp files and am relatively new to GIS. I am tryign to visualize the shp data, but am having a problem as I am incorrectly transforming the coordionates.
Here is an ...
- 347
1
vote
1
answer
945
views
What does the "zone" stand for in proj?
I am using proj, in particular pyproj, to convert from UTM coordinates to the (x,y) coordinates used, for example, by Google Maps. There is a parameter called zone which I could not understand how I ...
- 347