With all the features and possibilities available in CalTopo, the first time you open the map viewer can be overwhelming for some users.
The purpose of this lesson is to get you acquainted with the map viewer on both the web and mobile app. You’ll find that once you get familiar with the lay of the land, it's much easier to find your way around and get started creating unique and informative maps.
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When you first open up CalTopo, you will see the map viewer. The map viewer is where you create and edit maps.
The screenshots and videos below will take you on a tour of different parts of the map viewer as seen when logged into a free account - first on the web, and then on the mobile app. Keep in mind that you can do a lot with a free account on CalTopo; however you will gain access to even more features with a paid subscription.
For more information on the features and pricing of individual account subscriptions, please visit our Individual Accounts page.
Ignore all the side bars for a moment and look at just the buttons and information boxes drawn on top of the base map. Many primary map functions are located here.
Use the zoom control buttons to zoom in and out on the map. Double clicking on the map or using your mouse wheel will control the map zoom also. You can also use your mouse to move, or pan, the map by clicking and dragging. The arrow keys on your keyboard will move the map as well.
In the top right corner of the map viewer, there is a small box overlaying the background map that contains information about the cursor location on the map, or the center of the map in view depending on which settings you choose in the settings menu. This box shows the coordinates of the cursor in the two formats you chose in settings, as well as the elevation of that point and the datum for the map.
At the bottom of the window are the map scale on the left, and the copyright info and locate me button on the right. If you turn on more layers, additional info such as legends will also display along the bottom of the page.
The other three buttons (map sharing, print, and measure) all open additional menus or browser pages, as shown in the next three images.
After you close the "accept use" banner, you will see the top bar. On the left side of the bar are the CalTopo logo, which links to the CalTopo About site, and the help button, which links to a page with several resources for getting help, including this page.
Moving across the page to the right, next you see the search bar. Enter the name of a place or coordinates (in any common format) into this bar, press enter on your keyboard, and the map will center on that location.
On the right side of the page are the Settings menu button, a Close button, Sign Up and Login buttons.
After creating an account and/or logging in to CalTopo, the buttons on the top bar change some.
On the left side of the screen is a column called the Map Objects Menu. You can collapse and expand this side bar using the arrow-tab or the keyboard shortcut control-o (^o). At the top of the bar are the buttons for importing map objects, exporting map objects, and adding new map objects. After you add a map object, they list in this column.
You can adjust the width of this sidebar by dragging the arrow tab left and right.
For more information about importing and exporting objects, go to the import and export chapter.
Pressing on the orange +Add button opens a menu with choices to create new map objects and custom layers. Some map objects have keyboard shortcuts also, which are listed next to the object name. The pushpin icon at the top of the menu will leave the menu open until you un-pin it.
Go to the Objects chapter to learn about adding objects to your map and working with them.
On the right hand side of the map viewer page is the Map Layers menu. Like the objects menu, this is collapsible via the arrow tab or a keyboard shortcut - in this case control-L (^L).
Layers are one of the most powerful features of CalTopo. You can learn all about using them and what each layer shows in the Layers chapter.
Base Layers: to select and stack base layers. The drop-down menu shows the list of layers to choose from.
Map Sheets: to select and stack geospatial images such as JPG, TIFF or PDF files.
Map Overlays: turn on and off overlays to add additional data to your map.
Preset Combinations: are a collection of staged layer and overlay combinations for easy access or to try out.
You can hide the layers menu in order to view more of the map. Click on the Map Layers button in the upper right of the map viewer to display or hide the sidebar. You can also use the tab mid-way down the column, on the map viewer side of the sidebar. When the layers side menu is closed, a layers icon also appears on top of the map below the cursor information box.
Log into the mobile app with the same provider and email as you use on the web app. If you still need to create an accoount and have questions about that, please go to the accounts lesson and/or the FAQs for accounts for account setup instructions.
After you have logged in, the mobile map viewer will now open.
The mobile map viewer has many of the same tools as the web, although the layout differs. Let’s explore the different parts of the mobile map viewer as seen on the iOS app. Some icons may differ on the Android app although their location and function is the same.
Let’s start with the icons along the top of the mobile map viewer.
The icons along the top of the map viewer include:
Below the icons along the top of the mobile map viewer is the crosshairs information dialog, similar to the cursor information dialog on the web. However the important difference is that the crosshairs information dialog displays the coordinates and elevation of the crosshairs at the center of the mobile map viewer. As you zoom in and out and pan around the map, the crosshairs will remain centered and the crosshairs information dialog will reflect the current coordinates and elevation of the crosshairs and the map datum.
The four dot Location Menu and Locate Me icons are in the lower left hand corner of the map viewer.
Finally let’s look at how you can move around the mobile map viewer. You can zoom in on a particular area by pinching your fingers together on the screen and zoom out by bringing your fingers further apart. To pan around the map, simply press your finger on the screen and drag it in the direction that you want to move the map.
If you’d prefer to take a virtual tour of the mobile map viewer, check out this video. As with the screenshots above, this video shows the iOS CalTopo app. Some icons may differ on the Android app but the location and function is the same.
Check out this video for a quick tour of the mobile app map viewer.