How to Create a Smooth Segmented Chart using Sketch 3 App

How to Create a Smooth Segmented Chart using Sketch 3 App

This tutorial will teach you how to create a simple line chart, inspired by Google Material design principles using primarily the vector tool, gradients and masks in Sketch 3 app.

Step 1

Open Sketch App and start by drawing a very large rectangle on the canvas to use as a background layer, this is an optional step but it does provide contrast between the background of the chart and the canvas color which will both be white. graph ui design tutorial for sketch app

Step 2

Next draw a smaller rectangle which will be the containing box around the chart. The dimensions should be 860 x 540 with a white background fill, no border and a subtle shadow: graph ui design tutorial for sketch app

Step 3

In the layers panel right click on both layers and select Lock Layer. graph ui design tutorial for sketch app

Step 4

With the Line (L) tool draw the first vertical grid line. To help you figure out where to place it, the bottom point of the line should be 70 pixels from the bottom and left of the containing box. The line itself should be 340 pixels in length. graph ui design tutorial for sketch app

Step 5

Duplicate the line 9 times, moving it 80 pixels to the right each time: graph ui design tutorial for sketch app

Step 6

Use the Text (T) tool to add some labels in between each grid line. graph ui design tutorial for sketch app

Step 7

Also create a text heading for the chart. graph ui design tutorial for sketch app

Step 8

We are now ready to draw the data for the chart, the desired effect will be a smooth wave. Begin by selecting the Vector (V) tool and click to place a point on the first grid line. Then click and hold the second point slightly higher on the next grid line, and with the mouse button still held down, drag the handles out until they are roughly in the middle of two grid lines as shown below: graph ui design tutorial for sketch app

Step 9

Repeat this process creating a vector point on each grid line, to create a smooth wave shape: graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app

Step 10

After drawing the next vector point, change the handle type to Disconnected and remove the right handle by dragging it back in towards the vector point. This will give you a straight corner when you draw the following point. graph ui design tutorial for sketch app

Step 11

Hold down the Shift key while creating the next two points to constrict them to perfectly straight lines. Go to the bottom of the last grid line and then all the way over to the bottom of the first grid line. graph ui design tutorial for sketch app graph ui design tutorial for sketch app

Step 12

To finish the path and complete the shape, click Close Path. graph ui design tutorial for sketch app graph ui design tutorial for sketch app

Step 13

Now let's give our wave some color. Remove the border if it has one and apply a Gradient fill instead. The arrow buttons can be used to quickly rotate the gradient and make it horizontal. Set the color stops to #61FSD2 and #1C9BF7. I strongly recommend saving this as a new preset to save time later. graph ui design tutorial for sketch app

Step 14

Change the Opacity of the 'Path' layer to 50%. graph ui design tutorial for sketch app

Step 15

Duplicate the 'Path' layer and then on the new 'Path 2' layer edit the vector shape. First click Open Path and then delete the bottom two points so that all you have remaining is a wavy line from the left to the right (this will look kind of wonky at first, but don't worry!) graph ui design tutorial for sketch app graph ui design tutorial for sketch app graph ui design tutorial for sketch app

Step 16

With the 'Path 2' layer still selected, remove the gradient fill and instead apply a 3 pixel Border, using the same gradient (you did save it as a preset right?). graph ui design tutorial for sketch app

Step 17

Select both the fill and border path layers ('Path 1' and 'Path 2') and hit CMD+G to group them. Rename the group to 'Wave'. graph ui design tutorial for sketch app

Step 18

Create a new rectangle on a layer above the 'Wave' group, this is for the highlighted segment and should be around 40 pixels taller and 40 pixels wider than the actual grid segment in order to give the illusion of depth. graph ui design tutorial for sketch app

Step 19

Select both the 'Wave' and 'Rectangle 3' layers and duplicate them. graph ui design tutorial for sketch app

Step 20

Select the duplicated 'Wave 2' and 'Rectangle 4' layers and go to Layer > Mask with Selected Shape or click the Mask icon in the toolbar. graph ui design tutorial for sketch app

Step 21

Expand the 'Wave 2' group in the layers panel and select the sub-group also called 'Wave 2'. Use the bounding box/transform controls to increase the size of the wave around 5-10% and give it a "zoomed-in" effect. graph ui design tutorial for sketch app

Step 22

Now expand the 'Wave 2' subgroup that you just resized, and select the 'Path 2' layer within. This is the layer with the border, increase the Thickness of the border to 5. graph ui design tutorial for sketch app

Step 23

It is still a little difficult to distinguish between the zoomed in section and the original wave, so let's go back to the original 'Wave' group and reduce the Opacity value of the whole group to 75%. graph ui design tutorial for sketch app

Step 24

And to cement the illusion of depth, select the 'Rectangle 3' layer and apply a Shadow. There is now a clear distinction between the base chart and the highlighted segment. graph ui design tutorial for sketch app

Step 25

Finally, let's just add back in the text label for '30' that is now hidden, but make it much darker and larger this time. graph ui design tutorial for sketch app

Result

Here is the final result, an undoubtably very simple chart but a very pretty one! graph ui design tutorial for sketch app

Conclusion

Hopefully by following along with this tutorial you now have a better understanding of using the vector tool for drawing smooth wave-like shapes, gradient fills and also how to use shapes to mask groups and layers. It may also provide an introduction to Material design principles that can be implemented into your designs.

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